Y2038 July 2018

y2038@lists.linaro.org

27 participants
31 discussions

[PATCH v2 00/17] y2038: system calls, part 3

by Arnd Bergmann

This is a mostly unchanged copy of a series I sent back in April for an initial review. All the earlier syscall patches that Deepa or I sent got merged now, and this is the largest chunk of remaining patches. Changes this time are: - This is actually tested with the LTP syscalls test suite, both before and after the CONFIG_64BIT_TIME change (which is not included here). I have created a patch series for musl libc to use 64-bit time_t and change all the system calls over to the new entry points for this. The only bugs I found during that testing were in later parts of the conversion that I have not posted yet. - I rewrote the sys_io_getevents conversion after the introduction of sys_sys_io_getevents. We obviously don't need to have two of each, so we will only provide sys_io_pgetevents() with 64-bit time_t but not sys_io_getevents(), which the libc can implement on top of the former. - While we have Deepa's POSIX timer conversion merged now, we still need to decide on how we want to do the replacement ABI for getitimer()/setitimer(). Like getrusage()/waitid() and clock_adjtime() and unlike the system calls I'm posting here, there is no one obvious ABI. - For ppoll()/pselect6(), the ABI is fairly clear, but the implementation still needs to be done. I tested with a simple prototype based on the existing compat code, but we can probably improve that. This is something that Deepa still wants to work on. - Finally, Christoph Hellwig objected to the idea of reusing the compat_ namespace for the 32-bit native case. Changing that would be a departure from our plans so far[2], and would make some things end up differently. Until we have decided on how this is to be done, I've decided to not change the code for this post. We can clearly rename all the symbols and I've implemented that in [3] for the current linux-next (not including the series here). This is something we can definitely do, but I'd need to know soon whether we can merge this series unchanged for 4.19 or if I should rebase it on top of that patch with the alternative naming. Arnd --- Previous cover letter announcement below, see [4] for the full series: After the first timekeeping series from Deepa (merged into -tip now) and my follow-up for IPC system calls, this is a third set of system call conversions following the same principle. Most of the changes are straightforward, so I'm grouping them into a larger series even though the system calls are mostly unrelated to one another. After this series, the remaining calls that need to be changed are getrusage()/waitid(), pselect6/ppoll(), timer{,fd}_{get,set}time() and getitimer()/setitimer(). Those will be sent separately, once they are matured enough. To put the changes into perspective, a list of all system calls that require changes is available in a spreadsheet[5] and I have made another experimental patch that changes over x86[6] and arm[7] to actually use them. Link [1] https://lore.kernel.org/lkml/20180712082034.GA8802@infradead.org/ Link [2] https://lwn.net/Articles/643234/ Link [3] https://lore.kernel.org/lkml/20180713133204.3123939-1-arnd@arndb.de/ Link [4] https://lore.kernel.org/lkml/20180425160311.2718314-1-arnd@arndb.de/ Link [5] https://docs.google.com/spreadsheets/d/1HCYwHXxs48TsTb6IGUduNjQnmfRvMPzCN6T… Link [6] https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/commit/… Link [7] https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/commit/… Arnd Bergmann (17): y2038: compat: Move common compat types to asm-generic/compat.h y2038: Remove newstat family from default syscall set y2038: Remove stat64 family from default syscall set asm-generic: Remove unneeded __ARCH_WANT_SYS_LLSEEK macro asm-generic: Remove empty asm/unistd.h y2038: Change sys_utimensat() to use __kernel_timespec y2038: Compile utimes()/futimesat() conditionally y2038: utimes: Rework #ifdef guards for compat syscalls y2038: futex: Move compat implementation into futex.c y2038: futex: Add support for __kernel_timespec y2038: Prepare sched_rr_get_interval for __kernel_timespec y2038: aio: Prepare sys_io_{p,}getevents for __kernel_timespec y2038: socket: Convert recvmmsg to __kernel_timespec y2038: socket: Add compat_sys_recvmmsg_time64 y2038: signal: Change rt_sigtimedwait to use __kernel_timespec y2038: Make compat_sys_rt_sigtimedwait usable on 32-bit y2038: signal: Add compat_sys_rt_sigtimedwait_time64 arch/alpha/include/asm/unistd.h | 2 + arch/arc/include/uapi/asm/unistd.h | 1 + arch/arm/include/asm/unistd.h | 4 +- arch/arm64/include/asm/compat.h | 20 +-- arch/arm64/include/asm/unistd.h | 2 +- arch/arm64/include/uapi/asm/unistd.h | 1 + arch/c6x/include/uapi/asm/unistd.h | 1 + arch/h8300/include/uapi/asm/unistd.h | 1 + arch/hexagon/include/uapi/asm/unistd.h | 1 + arch/ia64/include/asm/unistd.h | 3 + arch/m68k/include/asm/unistd.h | 2 +- arch/microblaze/include/asm/unistd.h | 2 +- arch/mips/include/asm/compat.h | 22 +--- arch/mips/include/asm/unistd.h | 3 +- arch/nds32/include/uapi/asm/unistd.h | 1 + arch/nios2/include/uapi/asm/unistd.h | 1 + arch/openrisc/include/uapi/asm/unistd.h | 1 + arch/parisc/include/asm/compat.h | 18 +-- arch/parisc/include/asm/unistd.h | 3 +- arch/powerpc/include/asm/compat.h | 18 +-- arch/powerpc/include/asm/unistd.h | 3 +- arch/s390/include/asm/compat.h | 18 +-- arch/s390/include/asm/unistd.h | 3 +- arch/sh/include/asm/unistd.h | 2 +- arch/sparc/include/asm/compat.h | 19 +-- arch/sparc/include/asm/unistd.h | 3 +- arch/unicore32/include/uapi/asm/unistd.h | 1 + arch/x86/include/asm/compat.h | 19 +-- arch/x86/include/asm/unistd.h | 3 +- arch/xtensa/include/asm/unistd.h | 2 +- fs/aio.c | 77 ++++++++++-- fs/read_write.c | 2 +- fs/stat.c | 3 + fs/utimes.c | 59 +++++---- include/asm-generic/compat.h | 24 +++- include/asm-generic/unistd.h | 13 -- include/linux/compat.h | 12 +- include/linux/compat_time.h | 5 + include/linux/futex.h | 8 -- include/linux/socket.h | 19 ++- include/linux/syscalls.h | 25 ++-- include/uapi/asm-generic/unistd.h | 2 + kernel/Makefile | 3 - kernel/futex.c | 207 +++++++++++++++++++++++++++++-- kernel/futex_compat.c | 202 ------------------------------ kernel/sched/core.c | 4 +- kernel/signal.c | 68 ++++++++-- kernel/sys_ni.c | 1 + net/compat.c | 16 +-- net/socket.c | 55 ++++++-- 50 files changed, 524 insertions(+), 461 deletions(-) delete mode 100644 include/asm-generic/unistd.h delete mode 100644 kernel/futex_compat.c -- 2.9.0

6 years, 4 months

[PATCH 1/2] [RESEND] jffs2: use 64-bit intermediate timestamps

by Arnd Bergmann

The VFS now uses timespec64 timestamps consistently, but jffs2 still converts them to 32-bit numbers on the storage medium. As the helper functions for the conversion (get_seconds() and timespec_to_timespec64()) are now deprecated, let's change them over to the more modern replacements. This keeps the traditional interpretation of those values, where the on-disk 32-bit numbers are taken to be negative numbers, i.e. dates before 1970, on 32-bit machines, but future numbers past 2038 on 64-bit machines. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- I originally sent these two patches on Jun 19, but got no reply aside from a harmless sparse warning reported by the kbuild test robot. Looking at the git history for jffs2, it seems that David Woodhouse hasn't applied any patches for over two years, so I suppose he's not taking these either. Al or Andrew, could you pick these up instead? --- fs/jffs2/dir.c | 32 ++++++++++++++++---------------- fs/jffs2/file.c | 6 +++--- fs/jffs2/fs.c | 12 ++++++------ fs/jffs2/os-linux.h | 3 ++- 4 files changed, 27 insertions(+), 26 deletions(-) diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index b2944f9218f7..f20cff1194bb 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -201,7 +201,7 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, if (ret) goto fail; - dir_i->i_mtime = dir_i->i_ctime = timespec_to_timespec64(ITIME(je32_to_cpu(ri->ctime))); + dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(ri->ctime)); jffs2_free_raw_inode(ri); @@ -227,14 +227,14 @@ static int jffs2_unlink(struct inode *dir_i, struct dentry *dentry) struct jffs2_inode_info *dir_f = JFFS2_INODE_INFO(dir_i); struct jffs2_inode_info *dead_f = JFFS2_INODE_INFO(d_inode(dentry)); int ret; - uint32_t now = get_seconds(); + uint32_t now = JFFS2_NOW(); ret = jffs2_do_unlink(c, dir_f, dentry->d_name.name, dentry->d_name.len, dead_f, now); if (dead_f->inocache) set_nlink(d_inode(dentry), dead_f->inocache->pino_nlink); if (!ret) - dir_i->i_mtime = dir_i->i_ctime = timespec_to_timespec64(ITIME(now)); + dir_i->i_mtime = dir_i->i_ctime = ITIME(now); return ret; } /***********************************************************************/ @@ -260,7 +260,7 @@ static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct de type = (d_inode(old_dentry)->i_mode & S_IFMT) >> 12; if (!type) type = DT_REG; - now = get_seconds(); + now = JFFS2_NOW(); ret = jffs2_do_link(c, dir_f, f->inocache->ino, type, dentry->d_name.name, dentry->d_name.len, now); if (!ret) { @@ -268,7 +268,7 @@ static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct de set_nlink(d_inode(old_dentry), ++f->inocache->pino_nlink); mutex_unlock(&f->sem); d_instantiate(dentry, d_inode(old_dentry)); - dir_i->i_mtime = dir_i->i_ctime = timespec_to_timespec64(ITIME(now)); + dir_i->i_mtime = dir_i->i_ctime = ITIME(now); ihold(d_inode(old_dentry)); } return ret; @@ -400,7 +400,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char rd->pino = cpu_to_je32(dir_i->i_ino); rd->version = cpu_to_je32(++dir_f->highest_version); rd->ino = cpu_to_je32(inode->i_ino); - rd->mctime = cpu_to_je32(get_seconds()); + rd->mctime = cpu_to_je32(JFFS2_NOW()); rd->nsize = namelen; rd->type = DT_LNK; rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8)); @@ -418,7 +418,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char goto fail; } - dir_i->i_mtime = dir_i->i_ctime = timespec_to_timespec64(ITIME(je32_to_cpu(rd->mctime))); + dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime)); jffs2_free_raw_dirent(rd); @@ -543,7 +543,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, umode_t mode rd->pino = cpu_to_je32(dir_i->i_ino); rd->version = cpu_to_je32(++dir_f->highest_version); rd->ino = cpu_to_je32(inode->i_ino); - rd->mctime = cpu_to_je32(get_seconds()); + rd->mctime = cpu_to_je32(JFFS2_NOW()); rd->nsize = namelen; rd->type = DT_DIR; rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8)); @@ -561,7 +561,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, umode_t mode goto fail; } - dir_i->i_mtime = dir_i->i_ctime = timespec_to_timespec64(ITIME(je32_to_cpu(rd->mctime))); + dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime)); inc_nlink(dir_i); jffs2_free_raw_dirent(rd); @@ -588,7 +588,7 @@ static int jffs2_rmdir (struct inode *dir_i, struct dentry *dentry) struct jffs2_inode_info *f = JFFS2_INODE_INFO(d_inode(dentry)); struct jffs2_full_dirent *fd; int ret; - uint32_t now = get_seconds(); + uint32_t now = JFFS2_NOW(); for (fd = f->dents ; fd; fd = fd->next) { if (fd->ino) @@ -598,7 +598,7 @@ static int jffs2_rmdir (struct inode *dir_i, struct dentry *dentry) ret = jffs2_do_unlink(c, dir_f, dentry->d_name.name, dentry->d_name.len, f, now); if (!ret) { - dir_i->i_mtime = dir_i->i_ctime = timespec_to_timespec64(ITIME(now)); + dir_i->i_mtime = dir_i->i_ctime = ITIME(now); clear_nlink(d_inode(dentry)); drop_nlink(dir_i); } @@ -712,7 +712,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, umode_t mode rd->pino = cpu_to_je32(dir_i->i_ino); rd->version = cpu_to_je32(++dir_f->highest_version); rd->ino = cpu_to_je32(inode->i_ino); - rd->mctime = cpu_to_je32(get_seconds()); + rd->mctime = cpu_to_je32(JFFS2_NOW()); rd->nsize = namelen; /* XXX: This is ugly. */ @@ -733,7 +733,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, umode_t mode goto fail; } - dir_i->i_mtime = dir_i->i_ctime = timespec_to_timespec64(ITIME(je32_to_cpu(rd->mctime))); + dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime)); jffs2_free_raw_dirent(rd); @@ -797,7 +797,7 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry, type = (d_inode(old_dentry)->i_mode & S_IFMT) >> 12; if (!type) type = DT_REG; - now = get_seconds(); + now = JFFS2_NOW(); ret = jffs2_do_link(c, JFFS2_INODE_INFO(new_dir_i), d_inode(old_dentry)->i_ino, type, new_dentry->d_name.name, new_dentry->d_name.len, now); @@ -853,14 +853,14 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry, * caller won't do it on its own since we are returning an error. */ d_invalidate(new_dentry); - new_dir_i->i_mtime = new_dir_i->i_ctime = timespec_to_timespec64(ITIME(now)); + new_dir_i->i_mtime = new_dir_i->i_ctime = ITIME(now); return ret; } if (d_is_dir(old_dentry)) drop_nlink(old_dir_i); - new_dir_i->i_mtime = new_dir_i->i_ctime = old_dir_i->i_mtime = old_dir_i->i_ctime = timespec_to_timespec64(ITIME(now)); + new_dir_i->i_mtime = new_dir_i->i_ctime = old_dir_i->i_mtime = old_dir_i->i_ctime = ITIME(now); return 0; } diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index 481afd4c2e1a..7d8654a1472e 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -175,7 +175,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping, ri.uid = cpu_to_je16(i_uid_read(inode)); ri.gid = cpu_to_je16(i_gid_read(inode)); ri.isize = cpu_to_je32(max((uint32_t)inode->i_size, pageofs)); - ri.atime = ri.ctime = ri.mtime = cpu_to_je32(get_seconds()); + ri.atime = ri.ctime = ri.mtime = cpu_to_je32(JFFS2_NOW()); ri.offset = cpu_to_je32(inode->i_size); ri.dsize = cpu_to_je32(pageofs - inode->i_size); ri.csize = cpu_to_je32(0); @@ -283,7 +283,7 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping, ri->uid = cpu_to_je16(i_uid_read(inode)); ri->gid = cpu_to_je16(i_gid_read(inode)); ri->isize = cpu_to_je32((uint32_t)inode->i_size); - ri->atime = ri->ctime = ri->mtime = cpu_to_je32(get_seconds()); + ri->atime = ri->ctime = ri->mtime = cpu_to_je32(JFFS2_NOW()); /* In 2.4, it was already kmapped by generic_file_write(). Doesn't hurt to do it again. The alternative is ifdefs, which are ugly. */ @@ -308,7 +308,7 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping, inode->i_size = pos + writtenlen; inode->i_blocks = (inode->i_size + 511) >> 9; - inode->i_ctime = inode->i_mtime = timespec_to_timespec64(ITIME(je32_to_cpu(ri->ctime))); + inode->i_ctime = inode->i_mtime = ITIME(je32_to_cpu(ri->ctime)); } } diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 0ecfb8ea38cd..eab04eca95a3 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -146,9 +146,9 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) return PTR_ERR(new_metadata); } /* It worked. Update the inode */ - inode->i_atime = timespec_to_timespec64(ITIME(je32_to_cpu(ri->atime))); - inode->i_ctime = timespec_to_timespec64(ITIME(je32_to_cpu(ri->ctime))); - inode->i_mtime = timespec_to_timespec64(ITIME(je32_to_cpu(ri->mtime))); + inode->i_atime = ITIME(je32_to_cpu(ri->atime)); + inode->i_ctime = ITIME(je32_to_cpu(ri->ctime)); + inode->i_mtime = ITIME(je32_to_cpu(ri->mtime)); inode->i_mode = jemode_to_cpu(ri->mode); i_uid_write(inode, je16_to_cpu(ri->uid)); i_gid_write(inode, je16_to_cpu(ri->gid)); @@ -280,9 +280,9 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino) i_uid_write(inode, je16_to_cpu(latest_node.uid)); i_gid_write(inode, je16_to_cpu(latest_node.gid)); inode->i_size = je32_to_cpu(latest_node.isize); - inode->i_atime = timespec_to_timespec64(ITIME(je32_to_cpu(latest_node.atime))); - inode->i_mtime = timespec_to_timespec64(ITIME(je32_to_cpu(latest_node.mtime))); - inode->i_ctime = timespec_to_timespec64(ITIME(je32_to_cpu(latest_node.ctime))); + inode->i_atime = ITIME(je32_to_cpu(latest_node.atime)); + inode->i_mtime = ITIME(je32_to_cpu(latest_node.mtime)); + inode->i_ctime = ITIME(je32_to_cpu(latest_node.ctime)); set_nlink(inode, f->inocache->pino_nlink); diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h index c2fbec19c616..acbe1f722f2d 100644 --- a/fs/jffs2/os-linux.h +++ b/fs/jffs2/os-linux.h @@ -31,7 +31,8 @@ struct kvec; #define JFFS2_F_I_GID(f) (i_gid_read(OFNI_EDONI_2SFFJ(f))) #define JFFS2_F_I_RDEV(f) (OFNI_EDONI_2SFFJ(f)->i_rdev) -#define ITIME(sec) ((struct timespec){sec, 0}) +#define ITIME(sec) ((struct timespec64){(int32_t)sec, 0}) +#define JFFS2_NOW() (ktime_get_real_seconds()) #define I_SEC(tv) ((tv).tv_sec) #define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime.tv_sec) #define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime.tv_sec) -- 2.9.0

6 years, 4 months

[PATCH 1/3] [RESEND] ufs: use ktime_get_real_seconds for sb and cg timestamps

by Arnd Bergmann

get_seconds() is deprecated because of the 32-bit overflow and will be removed. All callers in ufs also truncate to a 32-bit number, so nothing changes during the conversion, but this should be harmless as the superblock and cylinder group timestamps are not visible to user space, except for checking the fs-dirty state, wich works fine across the overflow. This moves the call to get_seconds() into a new inline function, with a comment explaining the constraints, while converting it to ktime_get_real_seconds(). Acked-by: Thomas Gleixner <tglx(a)linutronix.de> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- Originally sent on June 19, got an Ack but nobody picked up the patch. --- fs/ufs/balloc.c | 4 ++-- fs/ufs/ialloc.c | 2 +- fs/ufs/super.c | 4 ++-- fs/ufs/util.h | 14 ++++++++++++++ 4 files changed, 19 insertions(+), 5 deletions(-) diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index e727ee07dbe4..075d3d9114c8 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -547,7 +547,7 @@ static u64 ufs_add_fragments(struct inode *inode, u64 fragment, /* * Block can be extended */ - ucg->cg_time = cpu_to_fs32(sb, get_seconds()); + ucg->cg_time = ufs_get_seconds(sb); for (i = newcount; i < (uspi->s_fpb - fragoff); i++) if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i)) break; @@ -639,7 +639,7 @@ static u64 ufs_alloc_fragments(struct inode *inode, unsigned cgno, if (!ufs_cg_chkmagic(sb, ucg)) ufs_panic (sb, "ufs_alloc_fragments", "internal error, bad magic number on cg %u", cgno); - ucg->cg_time = cpu_to_fs32(sb, get_seconds()); + ucg->cg_time = ufs_get_seconds(sb); if (count == uspi->s_fpb) { result = ufs_alloccg_block (inode, ucpi, goal, err); diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c index e1ef0f0a1353..c678fff2a04d 100644 --- a/fs/ufs/ialloc.c +++ b/fs/ufs/ialloc.c @@ -89,7 +89,7 @@ void ufs_free_inode (struct inode * inode) if (!ufs_cg_chkmagic(sb, ucg)) ufs_panic (sb, "ufs_free_fragments", "internal error, bad cg magic number"); - ucg->cg_time = cpu_to_fs32(sb, get_seconds()); + ucg->cg_time = ufs_get_seconds(sb); is_directory = S_ISDIR(inode->i_mode); diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 96a20a76e3c4..f48a5b802221 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -698,7 +698,7 @@ static int ufs_sync_fs(struct super_block *sb, int wait) usb1 = ubh_get_usb_first(uspi); usb3 = ubh_get_usb_third(uspi); - usb1->fs_time = cpu_to_fs32(sb, get_seconds()); + usb1->fs_time = ufs_get_seconds(sb); if ((flags & UFS_ST_MASK) == UFS_ST_SUN || (flags & UFS_ST_MASK) == UFS_ST_SUNOS || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) @@ -1344,7 +1344,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, */ if (*mount_flags & SB_RDONLY) { ufs_put_super_internal(sb); - usb1->fs_time = cpu_to_fs32(sb, get_seconds()); + usb1->fs_time = ufs_get_seconds(sb); if ((flags & UFS_ST_MASK) == UFS_ST_SUN || (flags & UFS_ST_MASK) == UFS_ST_SUNOS || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) diff --git a/fs/ufs/util.h b/fs/ufs/util.h index 1907be6d5808..1fd3011ea623 100644 --- a/fs/ufs/util.h +++ b/fs/ufs/util.h @@ -590,3 +590,17 @@ static inline int ufs_is_data_ptr_zero(struct ufs_sb_private_info *uspi, else return *(__fs32 *)p == 0; } + +static inline __fs32 ufs_get_seconds(struct super_block *sbp) +{ + time64_t now = ktime_get_real_seconds(); + + /* Signed 32-bit interpretation wraps around in 2038, which + * happens in ufs1 inode stamps but not ufs2 using 64-bits + * stamps. For superblock and blockgroup, let's assume + * unsigned 32-bit stamps, which are good until y2106. + * Wrap around rather than clamp here to make the dirty + * file system detection work in the superblock stamp. + */ + return cpu_to_fs32(sbp, lower_32_bits(now)); +} -- 2.9.0

6 years, 4 months

[PATCH] [RFC] y2038: globally rename compat_time to old_time32

by Arnd Bergmann

Christoph Hellwig suggested a slightly different path for handling backwards compatibility with the 32-bit time_t based system calls: Rather than simply reusing the compat_sys_* entry points on 32-bit architectures unchanged, we get rid of those entry points and the compat_time types by renaming them to something that makes more sense on 32-bit architectures (which don't have a compat mode otherwise), and then share the entry points under the new name with the 64-bit architectures that use them for implementing the compatibility. The following types and interfaces are renamed here, and moved from linux/compat_time.h to linux/time32.h: old new --- --- compat_time_t old_time32_t struct compat_timeval struct old_timeval32 struct compat_timespec struct old_timespec32 struct compat_itimerspec struct old_itimerspec32 ns_to_compat_timeval() ns_to_old_timeval32() get_compat_itimerspec64() get_old_itimerspec32() put_compat_itimerspec64() put_old_itimerspec32() compat_get_timespec64() get_old_timespec32() compat_put_timespec64() put_old_timespec32() I considered doing this only for those instances that are actually shared between 32-bit and 64-bit kernels, but doing it everywhere avoids duplication. This should make more sense for the 32-bit implementation, and the naming suggests that these interfaces are meant for 'old' syscalls only, and that they always operate on 32-bit time_t on both 32-bit and 64-bit architectures, something that may not be obvious from the compat_* naming. I'm not renaming the timex, rusage and itimerval structures, as we are still debating what the new interface will look like, and whether we will need a replacement at all. This also doesn't change the names of the syscall entry points, which can be done more easily when we actually switch over the 32-bit architectures to use them, at that point we need to change COMPAT_SYSCALL_DEFINEx to SYSCALL_DEFINEx with a new name, e.g. with a _time32 suffix. Suggested-by: Christoph Hellwig <hch(a)infradead.org> Link: https://lore.kernel.org/lkml/20180705222110.GA5698@infradead.org/ Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- Both Deepa and I have pending syscall conversion patches, but if we can get consensus on the rename, they should be easy to rebase on top of this patch. The patch would be easy to split up in various ways, but since it is a trivial rename, I went for a big patch with the first attempt. --- arch/arm64/include/asm/compat.h | 6 +- arch/arm64/include/asm/stat.h | 2 +- arch/mips/include/asm/compat.h | 6 +- arch/mips/kernel/binfmt_elfn32.c | 14 ++-- arch/mips/kernel/binfmt_elfo32.c | 14 ++-- arch/parisc/include/asm/compat.h | 6 +- arch/powerpc/include/asm/compat.h | 6 +- arch/powerpc/kernel/asm-offsets.c | 8 +-- arch/powerpc/oprofile/backtrace.c | 2 +- arch/sparc/include/asm/compat.h | 6 +- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 4 +- fs/aio.c | 8 +-- fs/compat_binfmt_elf.c | 2 +- fs/compat_ioctl.c | 6 +- fs/select.c | 20 +++--- fs/timerfd.c | 12 ++-- fs/utimes.c | 12 ++-- fs/xfs/xfs_ioctl32.c | 2 +- fs/xfs/xfs_ioctl32.h | 2 +- include/linux/compat.h | 96 +++++++++++++-------------- include/linux/compat_time.h | 32 --------- include/linux/elfcore-compat.h | 8 +-- include/linux/restart_block.h | 4 +- include/linux/syscalls.h | 2 +- include/linux/time32.h | 25 +++++++ ipc/mqueue.c | 8 +-- ipc/msg.c | 6 +- ipc/sem.c | 10 +-- ipc/shm.c | 6 +- ipc/syscall.c | 2 +- ipc/util.h | 2 +- kernel/compat.c | 8 +-- kernel/futex_compat.c | 2 +- kernel/sched/core.c | 4 +- kernel/signal.c | 2 +- kernel/time/hrtimer.c | 8 +-- kernel/time/posix-stubs.c | 18 ++--- kernel/time/posix-timers.c | 30 ++++----- kernel/time/time.c | 58 ++++++++-------- net/bluetooth/hci_sock.c | 2 +- net/compat.c | 22 +++--- sound/core/pcm_compat.c | 14 ++-- sound/core/rawmidi_compat.c | 2 +- sound/core/timer_compat.c | 2 +- 44 files changed, 252 insertions(+), 259 deletions(-) delete mode 100644 include/linux/compat_time.h diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index 1a037b94eba1..4a89007db14a 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -86,11 +86,11 @@ struct compat_stat { compat_off_t st_size; compat_off_t st_blksize; compat_off_t st_blocks; - compat_time_t st_atime; + old_time32_t st_atime; compat_ulong_t st_atime_nsec; - compat_time_t st_mtime; + old_time32_t st_mtime; compat_ulong_t st_mtime_nsec; - compat_time_t st_ctime; + old_time32_t st_ctime; compat_ulong_t st_ctime_nsec; compat_ulong_t __unused4[2]; }; diff --git a/arch/arm64/include/asm/stat.h b/arch/arm64/include/asm/stat.h index eab738019707..397c6ccd04e7 100644 --- a/arch/arm64/include/asm/stat.h +++ b/arch/arm64/include/asm/stat.h @@ -20,7 +20,7 @@ #ifdef CONFIG_COMPAT -#include <linux/compat_time.h> +#include <linux/time.h> #include <asm/compat.h> /* diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h index 78675f19440f..7dcbd855814e 100644 --- a/arch/mips/include/asm/compat.h +++ b/arch/mips/include/asm/compat.h @@ -59,11 +59,11 @@ struct compat_stat { s32 st_pad2[2]; compat_off_t st_size; s32 st_pad3; - compat_time_t st_atime; + old_time32_t st_atime; s32 st_atime_nsec; - compat_time_t st_mtime; + old_time32_t st_mtime; s32 st_mtime_nsec; - compat_time_t st_ctime; + old_time32_t st_ctime; s32 st_ctime_nsec; s32 st_blksize; s32 st_blocks; diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c index 89b234844534..7a12763d553a 100644 --- a/arch/mips/kernel/binfmt_elfn32.c +++ b/arch/mips/kernel/binfmt_elfn32.c @@ -54,10 +54,10 @@ struct elf_prstatus32 pid_t pr_ppid; pid_t pr_pgrp; pid_t pr_sid; - struct compat_timeval pr_utime; /* User time */ - struct compat_timeval pr_stime; /* System time */ - struct compat_timeval pr_cutime;/* Cumulative user time */ - struct compat_timeval pr_cstime;/* Cumulative system time */ + struct old_timeval32 pr_utime; /* User time */ + struct old_timeval32 pr_stime; /* System time */ + struct old_timeval32 pr_cutime;/* Cumulative user time */ + struct old_timeval32 pr_cstime;/* Cumulative system time */ elf_gregset_t pr_reg; /* GP registers */ int pr_fpvalid; /* True if math co-processor being used. */ }; @@ -81,9 +81,9 @@ struct elf_prpsinfo32 #define elf_caddr_t u32 #define init_elf_binfmt init_elfn32_binfmt -#define jiffies_to_timeval jiffies_to_compat_timeval +#define jiffies_to_timeval jiffies_to_old_timeval32 static __inline__ void -jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value) +jiffies_to_old_timeval32(unsigned long jiffies, struct old_timeval32 *value) { /* * Convert jiffies to nanoseconds and separate with @@ -101,6 +101,6 @@ jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value) #define TASK_SIZE TASK_SIZE32 #undef ns_to_timeval -#define ns_to_timeval ns_to_compat_timeval +#define ns_to_timeval ns_to_old_timeval32 #include "../../../fs/binfmt_elf.c" diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c index a88c59db3d48..e6db06a1d31a 100644 --- a/arch/mips/kernel/binfmt_elfo32.c +++ b/arch/mips/kernel/binfmt_elfo32.c @@ -59,10 +59,10 @@ struct elf_prstatus32 pid_t pr_ppid; pid_t pr_pgrp; pid_t pr_sid; - struct compat_timeval pr_utime; /* User time */ - struct compat_timeval pr_stime; /* System time */ - struct compat_timeval pr_cutime;/* Cumulative user time */ - struct compat_timeval pr_cstime;/* Cumulative system time */ + struct old_timeval32 pr_utime; /* User time */ + struct old_timeval32 pr_stime; /* System time */ + struct old_timeval32 pr_cutime;/* Cumulative user time */ + struct old_timeval32 pr_cstime;/* Cumulative system time */ elf_gregset_t pr_reg; /* GP registers */ int pr_fpvalid; /* True if math co-processor being used. */ }; @@ -86,9 +86,9 @@ struct elf_prpsinfo32 #define elf_caddr_t u32 #define init_elf_binfmt init_elf32_binfmt -#define jiffies_to_timeval jiffies_to_compat_timeval +#define jiffies_to_timeval jiffies_to_old_timeval32 static inline void -jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value) +jiffies_to_old_timeval32(unsigned long jiffies, struct old_timeval32 *value) { /* * Convert jiffies to nanoseconds and separate with @@ -104,6 +104,6 @@ jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value) #define TASK_SIZE TASK_SIZE32 #undef ns_to_timeval -#define ns_to_timeval ns_to_compat_timeval +#define ns_to_timeval ns_to_old_timeval32 #include "../../../fs/binfmt_elf.c" diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h index ab8a54771507..32dadaf2b534 100644 --- a/arch/parisc/include/asm/compat.h +++ b/arch/parisc/include/asm/compat.h @@ -48,11 +48,11 @@ struct compat_stat { u16 st_reserved2; /* old st_gid */ compat_dev_t st_rdev; compat_off_t st_size; - compat_time_t st_atime; + old_time32_t st_atime; u32 st_atime_nsec; - compat_time_t st_mtime; + old_time32_t st_mtime; u32 st_mtime_nsec; - compat_time_t st_ctime; + old_time32_t st_ctime; u32 st_ctime_nsec; s32 st_blksize; s32 st_blocks; diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h index 85c8af2bb272..93f79d1a03c3 100644 --- a/arch/powerpc/include/asm/compat.h +++ b/arch/powerpc/include/asm/compat.h @@ -55,11 +55,11 @@ struct compat_stat { compat_off_t st_size; compat_off_t st_blksize; compat_off_t st_blocks; - compat_time_t st_atime; + old_time32_t st_atime; u32 st_atime_nsec; - compat_time_t st_mtime; + old_time32_t st_mtime; u32 st_mtime_nsec; - compat_time_t st_ctime; + old_time32_t st_ctime; u32 st_ctime_nsec; u32 __unused4[2]; }; diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 0a0544335950..83e54cad564b 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -387,12 +387,12 @@ int main(void) OFFSET(CFG_SYSCALL_MAP64, vdso_data, syscall_map_64); OFFSET(TVAL64_TV_SEC, timeval, tv_sec); OFFSET(TVAL64_TV_USEC, timeval, tv_usec); - OFFSET(TVAL32_TV_SEC, compat_timeval, tv_sec); - OFFSET(TVAL32_TV_USEC, compat_timeval, tv_usec); + OFFSET(TVAL32_TV_SEC, old_timeval32, tv_sec); + OFFSET(TVAL32_TV_USEC, old_timeval32, tv_usec); OFFSET(TSPC64_TV_SEC, timespec, tv_sec); OFFSET(TSPC64_TV_NSEC, timespec, tv_nsec); - OFFSET(TSPC32_TV_SEC, compat_timespec, tv_sec); - OFFSET(TSPC32_TV_NSEC, compat_timespec, tv_nsec); + OFFSET(TSPC32_TV_SEC, old_timespec32, tv_sec); + OFFSET(TSPC32_TV_NSEC, old_timespec32, tv_nsec); #else OFFSET(TVAL32_TV_SEC, timeval, tv_sec); OFFSET(TVAL32_TV_USEC, timeval, tv_usec); diff --git a/arch/powerpc/oprofile/backtrace.c b/arch/powerpc/oprofile/backtrace.c index ad054dd0d666..5df6290d1ccc 100644 --- a/arch/powerpc/oprofile/backtrace.c +++ b/arch/powerpc/oprofile/backtrace.c @@ -7,7 +7,7 @@ * 2 of the License, or (at your option) any later version. **/ -#include <linux/compat_time.h> +#include <linux/time.h> #include <linux/oprofile.h> #include <linux/sched.h> #include <asm/processor.h> diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h index 4eb51d2dae98..7018cb60beef 100644 --- a/arch/sparc/include/asm/compat.h +++ b/arch/sparc/include/asm/compat.h @@ -47,11 +47,11 @@ struct compat_stat { __compat_gid_t st_gid; compat_dev_t st_rdev; compat_off_t st_size; - compat_time_t st_atime; + old_time32_t st_atime; compat_ulong_t st_atime_nsec; - compat_time_t st_mtime; + old_time32_t st_mtime; compat_ulong_t st_mtime_nsec; - compat_time_t st_ctime; + old_time32_t st_ctime; compat_ulong_t st_ctime_nsec; compat_off_t st_blksize; compat_off_t st_blocks; diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 6481212fda77..a57cbfaf332a 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -468,7 +468,7 @@ struct v4l2_buffer32 { __u32 bytesused; __u32 flags; __u32 field; /* enum v4l2_field */ - struct compat_timeval timestamp; + struct old_timeval32 timestamp; struct v4l2_timecode timecode; __u32 sequence; @@ -1024,7 +1024,7 @@ struct v4l2_event32 { } u; __u32 pending; __u32 sequence; - struct compat_timespec timestamp; + struct old_timespec32 timestamp; __u32 id; __u32 reserved[8]; }; diff --git a/fs/aio.c b/fs/aio.c index 76def7523ece..19513b880a06 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -1933,12 +1933,12 @@ COMPAT_SYSCALL_DEFINE5(io_getevents, compat_aio_context_t, ctx_id, compat_long_t, min_nr, compat_long_t, nr, struct io_event __user *, events, - struct compat_timespec __user *, timeout) + struct old_timespec32 __user *, timeout) { struct timespec64 t; int ret; - if (timeout && compat_get_timespec64(&t, timeout)) + if (timeout && get_old_timespec32(&t, timeout)) return -EFAULT; ret = do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &t : NULL); @@ -1958,7 +1958,7 @@ COMPAT_SYSCALL_DEFINE6(io_pgetevents, compat_long_t, min_nr, compat_long_t, nr, struct io_event __user *, events, - struct compat_timespec __user *, timeout, + struct old_timespec32 __user *, timeout, const struct __compat_aio_sigset __user *, usig) { struct __compat_aio_sigset ksig = { NULL, }; @@ -1966,7 +1966,7 @@ COMPAT_SYSCALL_DEFINE6(io_pgetevents, struct timespec64 t; int ret; - if (timeout && compat_get_timespec64(&t, timeout)) + if (timeout && get_old_timespec32(&t, timeout)) return -EFAULT; if (usig && copy_from_user(&ksig, usig, sizeof(ksig))) diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c index 504b3c3539dc..15f6e96b3bd9 100644 --- a/fs/compat_binfmt_elf.c +++ b/fs/compat_binfmt_elf.c @@ -52,7 +52,7 @@ #define elf_prpsinfo compat_elf_prpsinfo #undef ns_to_timeval -#define ns_to_timeval ns_to_compat_timeval +#define ns_to_timeval ns_to_old_timeval32 /* * To use this file, asm/elf.h must define compat_elf_check_arch. diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 9907475b4226..f79871246b1e 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -135,7 +135,7 @@ static int do_ioctl(struct file *file, unsigned int cmd, unsigned long arg) struct compat_video_event { int32_t type; - compat_time_t timestamp; + old_time32_t timestamp; union { video_size_t size; unsigned int frame_rate; @@ -449,8 +449,8 @@ struct ppp_option_data32 { #define PPPIOCSCOMPRESS32 _IOW('t', 77, struct ppp_option_data32) struct ppp_idle32 { - compat_time_t xmit_idle; - compat_time_t recv_idle; + old_time32_t xmit_idle; + old_time32_t recv_idle; }; #define PPPIOCGIDLE32 _IOR('t', 63, struct ppp_idle32) diff --git a/fs/select.c b/fs/select.c index 4a6b6e4b21cb..22b3bf89f051 100644 --- a/fs/select.c +++ b/fs/select.c @@ -1120,7 +1120,7 @@ int compat_poll_select_copy_remaining(struct timespec64 *end_time, void __user * ts.tv_sec = ts.tv_nsec = 0; if (timeval) { - struct compat_timeval rtv; + struct old_timeval32 rtv; rtv.tv_sec = ts.tv_sec; rtv.tv_usec = ts.tv_nsec / NSEC_PER_USEC; @@ -1128,7 +1128,7 @@ int compat_poll_select_copy_remaining(struct timespec64 *end_time, void __user * if (!copy_to_user(p, &rtv, sizeof(rtv))) return ret; } else { - if (!compat_put_timespec64(&ts, p)) + if (!put_old_timespec32(&ts, p)) return ret; } /* @@ -1257,10 +1257,10 @@ static int compat_core_sys_select(int n, compat_ulong_t __user *inp, static int do_compat_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, - struct compat_timeval __user *tvp) + struct old_timeval32 __user *tvp) { struct timespec64 end_time, *to = NULL; - struct compat_timeval tv; + struct old_timeval32 tv; int ret; if (tvp) { @@ -1282,7 +1282,7 @@ static int do_compat_select(int n, compat_ulong_t __user *inp, COMPAT_SYSCALL_DEFINE5(select, int, n, compat_ulong_t __user *, inp, compat_ulong_t __user *, outp, compat_ulong_t __user *, exp, - struct compat_timeval __user *, tvp) + struct old_timeval32 __user *, tvp) { return do_compat_select(n, inp, outp, exp, tvp); } @@ -1307,7 +1307,7 @@ COMPAT_SYSCALL_DEFINE1(old_select, struct compat_sel_arg_struct __user *, arg) static long do_compat_pselect(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, - struct compat_timespec __user *tsp, compat_sigset_t __user *sigmask, + struct old_timespec32 __user *tsp, compat_sigset_t __user *sigmask, compat_size_t sigsetsize) { sigset_t ksigmask, sigsaved; @@ -1315,7 +1315,7 @@ static long do_compat_pselect(int n, compat_ulong_t __user *inp, int ret; if (tsp) { - if (compat_get_timespec64(&ts, tsp)) + if (get_old_timespec32(&ts, tsp)) return -EFAULT; to = &end_time; @@ -1355,7 +1355,7 @@ static long do_compat_pselect(int n, compat_ulong_t __user *inp, COMPAT_SYSCALL_DEFINE6(pselect6, int, n, compat_ulong_t __user *, inp, compat_ulong_t __user *, outp, compat_ulong_t __user *, exp, - struct compat_timespec __user *, tsp, void __user *, sig) + struct old_timespec32 __user *, tsp, void __user *, sig) { compat_size_t sigsetsize = 0; compat_uptr_t up = 0; @@ -1373,7 +1373,7 @@ COMPAT_SYSCALL_DEFINE6(pselect6, int, n, compat_ulong_t __user *, inp, } COMPAT_SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds, - unsigned int, nfds, struct compat_timespec __user *, tsp, + unsigned int, nfds, struct old_timespec32 __user *, tsp, const compat_sigset_t __user *, sigmask, compat_size_t, sigsetsize) { sigset_t ksigmask, sigsaved; @@ -1381,7 +1381,7 @@ COMPAT_SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds, int ret; if (tsp) { - if (compat_get_timespec64(&ts, tsp)) + if (get_old_timespec32(&ts, tsp)) return -EFAULT; to = &end_time; diff --git a/fs/timerfd.c b/fs/timerfd.c index 38c695ce385b..cd055bce24e0 100644 --- a/fs/timerfd.c +++ b/fs/timerfd.c @@ -561,29 +561,29 @@ SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct __kernel_itimerspec __user *, #ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags, - const struct compat_itimerspec __user *, utmr, - struct compat_itimerspec __user *, otmr) + const struct old_itimerspec32 __user *, utmr, + struct old_itimerspec32 __user *, otmr) { struct itimerspec64 new, old; int ret; - if (get_compat_itimerspec64(&new, utmr)) + if (get_old_itimerspec32(&new, utmr)) return -EFAULT; ret = do_timerfd_settime(ufd, flags, &new, &old); if (ret) return ret; - if (otmr && put_compat_itimerspec64(&old, otmr)) + if (otmr && put_old_itimerspec32(&old, otmr)) return -EFAULT; return ret; } COMPAT_SYSCALL_DEFINE2(timerfd_gettime, int, ufd, - struct compat_itimerspec __user *, otmr) + struct old_itimerspec32 __user *, otmr) { struct itimerspec64 kotmr; int ret = do_timerfd_gettime(ufd, &kotmr); if (ret) return ret; - return put_compat_itimerspec64(&kotmr, otmr) ? -EFAULT : 0; + return put_old_itimerspec32(&kotmr, otmr) ? -EFAULT : 0; } #endif diff --git a/fs/utimes.c b/fs/utimes.c index 69d4b6ba1bfb..79a65c163f40 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -245,13 +245,13 @@ COMPAT_SYSCALL_DEFINE2(utime, const char __user *, filename, return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0); } -COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filename, struct compat_timespec __user *, t, int, flags) +COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filename, struct old_timespec32 __user *, t, int, flags) { struct timespec64 tv[2]; if (t) { - if (compat_get_timespec64(&tv[0], &t[0]) || - compat_get_timespec64(&tv[1], &t[1])) + if (get_old_timespec32(&tv[0], &t[0]) || + get_old_timespec32(&tv[1], &t[1])) return -EFAULT; if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT) @@ -261,7 +261,7 @@ COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filena } static long do_compat_futimesat(unsigned int dfd, const char __user *filename, - struct compat_timeval __user *t) + struct old_timeval32 __user *t) { struct timespec64 tv[2]; @@ -282,12 +282,12 @@ static long do_compat_futimesat(unsigned int dfd, const char __user *filename, COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filename, - struct compat_timeval __user *, t) + struct old_timeval32 __user *, t) { return do_compat_futimesat(dfd, filename, t); } -COMPAT_SYSCALL_DEFINE2(utimes, const char __user *, filename, struct compat_timeval __user *, t) +COMPAT_SYSCALL_DEFINE2(utimes, const char __user *, filename, struct old_timeval32 __user *, t) { return do_compat_futimesat(AT_FDCWD, filename, t); } diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index fba115f4103a..2689d3f4c65c 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -115,7 +115,7 @@ xfs_ioctl32_bstime_copyin( xfs_bstime_t *bstime, compat_xfs_bstime_t __user *bstime32) { - compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */ + old_time32_t sec32; /* tv_sec differs on 64 vs. 32 */ if (get_user(sec32, &bstime32->tv_sec) || get_user(bstime->tv_nsec, &bstime32->tv_nsec)) diff --git a/fs/xfs/xfs_ioctl32.h b/fs/xfs/xfs_ioctl32.h index d28fa824284a..4324b96a6d95 100644 --- a/fs/xfs/xfs_ioctl32.h +++ b/fs/xfs/xfs_ioctl32.h @@ -32,7 +32,7 @@ #endif typedef struct compat_xfs_bstime { - compat_time_t tv_sec; /* seconds */ + old_time32_t tv_sec; /* seconds */ __s32 tv_nsec; /* and nanoseconds */ } compat_xfs_bstime_t; diff --git a/include/linux/compat.h b/include/linux/compat.h index 1a3c4f37e908..0e058792ecf6 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -7,7 +7,7 @@ */ #include <linux/types.h> -#include <linux/compat_time.h> +#include <linux/time.h> #include <linux/stat.h> #include <linux/param.h> /* for HZ */ @@ -116,13 +116,13 @@ struct compat_sel_arg_struct; struct rusage; struct compat_utimbuf { - compat_time_t actime; - compat_time_t modtime; + old_time32_t actime; + old_time32_t modtime; }; struct compat_itimerval { - struct compat_timeval it_interval; - struct compat_timeval it_value; + struct old_timeval32 it_interval; + struct old_timeval32 it_value; }; struct itimerval; @@ -146,7 +146,7 @@ struct compat_timex { compat_long_t constant; compat_long_t precision; compat_long_t tolerance; - struct compat_timeval time; + struct old_timeval32 time; compat_long_t tick; compat_long_t ppsfreq; compat_long_t jitter; @@ -307,8 +307,8 @@ struct compat_rlimit { }; struct compat_rusage { - struct compat_timeval ru_utime; - struct compat_timeval ru_stime; + struct old_timeval32 ru_utime; + struct old_timeval32 ru_stime; compat_long_t ru_maxrss; compat_long_t ru_ixrss; compat_long_t ru_idrss; @@ -457,8 +457,8 @@ int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *fr int get_compat_sigevent(struct sigevent *event, const struct compat_sigevent __user *u_event); -static inline int compat_timeval_compare(struct compat_timeval *lhs, - struct compat_timeval *rhs) +static inline int old_timeval32_compare(struct old_timeval32 *lhs, + struct old_timeval32 *rhs) { if (lhs->tv_sec < rhs->tv_sec) return -1; @@ -467,8 +467,8 @@ static inline int compat_timeval_compare(struct compat_timeval *lhs, return lhs->tv_usec - rhs->tv_usec; } -static inline int compat_timespec_compare(struct compat_timespec *lhs, - struct compat_timespec *rhs) +static inline int old_timespec32_compare(struct old_timespec32 *lhs, + struct old_timespec32 *rhs) { if (lhs->tv_sec < rhs->tv_sec) return -1; @@ -552,12 +552,12 @@ asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, compat_long_t min_nr, compat_long_t nr, struct io_event __user *events, - struct compat_timespec __user *timeout); + struct old_timespec32 __user *timeout); asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id, compat_long_t min_nr, compat_long_t nr, struct io_event __user *events, - struct compat_timespec __user *timeout, + struct old_timespec32 __user *timeout, const struct __compat_aio_sigset __user *usig); /* fs/cookies.c */ @@ -642,11 +642,11 @@ asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, - struct compat_timespec __user *tsp, + struct old_timespec32 __user *tsp, void __user *sig); asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, unsigned int nfds, - struct compat_timespec __user *tsp, + struct old_timespec32 __user *tsp, const compat_sigset_t __user *sigmask, compat_size_t sigsetsize); @@ -671,15 +671,15 @@ asmlinkage long compat_sys_newfstat(unsigned int fd, /* fs/timerfd.c */ asmlinkage long compat_sys_timerfd_gettime(int ufd, - struct compat_itimerspec __user *otmr); + struct old_itimerspec32 __user *otmr); asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, - const struct compat_itimerspec __user *utmr, - struct compat_itimerspec __user *otmr); + const struct old_itimerspec32 __user *utmr, + struct old_itimerspec32 __user *otmr); /* fs/utimes.c */ asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filename, - struct compat_timespec __user *t, + struct old_timespec32 __user *t, int flags); /* kernel/exit.c */ @@ -691,7 +691,7 @@ asmlinkage long compat_sys_waitid(int, compat_pid_t, /* kernel/futex.c */ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, - struct compat_timespec __user *utime, u32 __user *uaddr2, + struct old_timespec32 __user *utime, u32 __user *uaddr2, u32 val3); asmlinkage long compat_sys_set_robust_list(struct compat_robust_list_head __user *head, @@ -701,8 +701,8 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, compat_size_t __user *len_ptr); /* kernel/hrtimer.c */ -asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, - struct compat_timespec __user *rmtp); +asmlinkage long compat_sys_nanosleep(struct old_timespec32 __user *rqtp, + struct old_timespec32 __user *rmtp); /* kernel/itimer.c */ asmlinkage long compat_sys_getitimer(int which, @@ -722,19 +722,19 @@ asmlinkage long compat_sys_timer_create(clockid_t which_clock, struct compat_sigevent __user *timer_event_spec, timer_t __user *created_timer_id); asmlinkage long compat_sys_timer_gettime(timer_t timer_id, - struct compat_itimerspec __user *setting); + struct old_itimerspec32 __user *setting); asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, - struct compat_itimerspec __user *new, - struct compat_itimerspec __user *old); + struct old_itimerspec32 __user *new, + struct old_itimerspec32 __user *old); asmlinkage long compat_sys_clock_settime(clockid_t which_clock, - struct compat_timespec __user *tp); + struct old_timespec32 __user *tp); asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, - struct compat_timespec __user *tp); + struct old_timespec32 __user *tp); asmlinkage long compat_sys_clock_getres(clockid_t which_clock, - struct compat_timespec __user *tp); + struct old_timespec32 __user *tp); asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, - struct compat_timespec __user *rqtp, - struct compat_timespec __user *rmtp); + struct old_timespec32 __user *rqtp, + struct old_timespec32 __user *rmtp); /* kernel/ptrace.c */ asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, @@ -748,7 +748,7 @@ asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len, compat_ulong_t __user *user_mask_ptr); asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, - struct compat_timespec __user *interval); + struct old_timespec32 __user *interval); /* kernel/signal.c */ asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, @@ -768,7 +768,7 @@ asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, compat_size_t sigsetsize); asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, struct compat_siginfo __user *uinfo, - struct compat_timespec __user *uts, compat_size_t sigsetsize); + struct old_timespec32 __user *uts, compat_size_t sigsetsize); asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, struct compat_siginfo __user *uinfo); /* No generic prototype for rt_sigreturn */ @@ -782,9 +782,9 @@ asmlinkage long compat_sys_setrlimit(unsigned int resource, asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); /* kernel/time.c */ -asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, +asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv, struct timezone __user *tz); -asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, +asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv, struct timezone __user *tz); asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); @@ -798,11 +798,11 @@ asmlinkage long compat_sys_mq_open(const char __user *u_name, asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr, compat_size_t msg_len, unsigned int msg_prio, - const struct compat_timespec __user *u_abs_timeout); + const struct old_timespec32 __user *u_abs_timeout); asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr, compat_size_t msg_len, unsigned int __user *u_msg_prio, - const struct compat_timespec __user *u_abs_timeout); + const struct old_timespec32 __user *u_abs_timeout); asmlinkage long compat_sys_mq_notify(mqd_t mqdes, const struct compat_sigevent __user *u_notification); asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, @@ -819,7 +819,7 @@ asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, /* ipc/sem.c */ asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); asmlinkage long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, - unsigned nsems, const struct compat_timespec __user *timeout); + unsigned nsems, const struct old_timespec32 __user *timeout); /* ipc/shm.c */ asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr); @@ -876,7 +876,7 @@ asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, struct compat_siginfo __user *uinfo); asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, unsigned vlen, unsigned int flags, - struct compat_timespec __user *timeout); + struct old_timespec32 __user *timeout); asmlinkage long compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options, struct compat_rusage __user *ru); @@ -928,7 +928,7 @@ asmlinkage long compat_sys_pwritev64v2(unsigned long fd, asmlinkage long compat_sys_open(const char __user *filename, int flags, umode_t mode); asmlinkage long compat_sys_utimes(const char __user *filename, - struct compat_timeval __user *t); + struct old_timeval32 __user *t); /* __ARCH_WANT_SYSCALL_NO_FLAGS */ asmlinkage long compat_sys_signalfd(int ufd, @@ -942,15 +942,15 @@ asmlinkage long compat_sys_newlstat(const char __user *filename, struct compat_stat __user *statbuf); /* __ARCH_WANT_SYSCALL_DEPRECATED */ -asmlinkage long compat_sys_time(compat_time_t __user *tloc); +asmlinkage long compat_sys_time(old_time32_t __user *tloc); asmlinkage long compat_sys_utime(const char __user *filename, struct compat_utimbuf __user *t); asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filename, - struct compat_timeval __user *t); + struct old_timeval32 __user *t); asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, - struct compat_timeval __user *tvp); + struct old_timeval32 __user *tvp); asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, unsigned flags); @@ -983,7 +983,7 @@ asmlinkage long compat_sys_sigaction(int sig, #endif /* obsolete: kernel/time/time.c */ -asmlinkage long compat_sys_stime(compat_time_t __user *tptr); +asmlinkage long compat_sys_stime(old_time32_t __user *tptr); /* obsolete: net/socket.c */ asmlinkage long compat_sys_socketcall(int call, u32 __user *args); @@ -1002,15 +1002,15 @@ static inline bool in_compat_syscall(void) { return is_compat_task(); } #endif /** - * ns_to_compat_timeval - Compat version of ns_to_timeval + * ns_to_old_timeval32 - Compat version of ns_to_timeval * @nsec: the nanoseconds value to be converted * - * Returns the compat_timeval representation of the nsec parameter. + * Returns the old_timeval32 representation of the nsec parameter. */ -static inline struct compat_timeval ns_to_compat_timeval(s64 nsec) +static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec) { struct timeval tv; - struct compat_timeval ctv; + struct old_timeval32 ctv; tv = ns_to_timeval(nsec); ctv.tv_sec = tv.tv_sec; diff --git a/include/linux/compat_time.h b/include/linux/compat_time.h deleted file mode 100644 index e70bfd1d2c3f..000000000000 --- a/include/linux/compat_time.h +++ /dev/null @@ -1,32 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _LINUX_COMPAT_TIME_H -#define _LINUX_COMPAT_TIME_H - -#include <linux/types.h> -#include <linux/time64.h> - -typedef s32 compat_time_t; - -struct compat_timespec { - compat_time_t tv_sec; - s32 tv_nsec; -}; - -struct compat_timeval { - compat_time_t tv_sec; - s32 tv_usec; -}; - -struct compat_itimerspec { - struct compat_timespec it_interval; - struct compat_timespec it_value; -}; - -extern int compat_get_timespec64(struct timespec64 *, const void __user *); -extern int compat_put_timespec64(const struct timespec64 *, void __user *); -extern int get_compat_itimerspec64(struct itimerspec64 *its, - const struct compat_itimerspec __user *uits); -extern int put_compat_itimerspec64(const struct itimerspec64 *its, - struct compat_itimerspec __user *uits); - -#endif /* _LINUX_COMPAT_TIME_H */ diff --git a/include/linux/elfcore-compat.h b/include/linux/elfcore-compat.h index b5f2efdd05e0..7a37f4ce9fd2 100644 --- a/include/linux/elfcore-compat.h +++ b/include/linux/elfcore-compat.h @@ -27,10 +27,10 @@ struct compat_elf_prstatus compat_pid_t pr_ppid; compat_pid_t pr_pgrp; compat_pid_t pr_sid; - struct compat_timeval pr_utime; - struct compat_timeval pr_stime; - struct compat_timeval pr_cutime; - struct compat_timeval pr_cstime; + struct old_timeval32 pr_utime; + struct old_timeval32 pr_stime; + struct old_timeval32 pr_cutime; + struct old_timeval32 pr_cstime; compat_elf_gregset_t pr_reg; #ifdef CONFIG_BINFMT_ELF_FDPIC compat_ulong_t pr_exec_fdpic_loadmap; diff --git a/include/linux/restart_block.h b/include/linux/restart_block.h index 5d83d0c1d06c..bba2920e9c05 100644 --- a/include/linux/restart_block.h +++ b/include/linux/restart_block.h @@ -10,7 +10,7 @@ #include <linux/time64.h> struct timespec; -struct compat_timespec; +struct old_timespec32; struct pollfd; enum timespec_type { @@ -40,7 +40,7 @@ struct restart_block { enum timespec_type type; union { struct __kernel_timespec __user *rmtp; - struct compat_timespec __user *compat_rmtp; + struct old_timespec32 __user *compat_rmtp; }; u64 expires; } nanosleep; diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 615cc9b374cf..a4f69cf75470 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -60,7 +60,7 @@ struct tms; struct utimbuf; struct mq_attr; struct compat_stat; -struct compat_timeval; +struct old_timeval32; struct robust_list_head; struct getcpu_cache; struct old_linux_dirent; diff --git a/include/linux/time32.h b/include/linux/time32.h index 0b14f936100a..206508967405 100644 --- a/include/linux/time32.h +++ b/include/linux/time32.h @@ -13,6 +13,31 @@ #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1) +typedef s32 old_time32_t; + +struct old_timespec32 { + old_time32_t tv_sec; + s32 tv_nsec; +}; + +struct old_timeval32 { + old_time32_t tv_sec; + s32 tv_usec; +}; + +struct old_itimerspec32 { + struct old_timespec32 it_interval; + struct old_timespec32 it_value; +}; + +extern int get_old_timespec32(struct timespec64 *, const void __user *); +extern int put_old_timespec32(const struct timespec64 *, void __user *); +extern int get_old_itimerspec32(struct itimerspec64 *its, + const struct old_itimerspec32 __user *uits); +extern int put_old_itimerspec32(const struct itimerspec64 *its, + struct old_itimerspec32 __user *uits); + + #if __BITS_PER_LONG == 64 /* timespec64 is defined as timespec here */ diff --git a/ipc/mqueue.c b/ipc/mqueue.c index 0f102210f89e..a210340062da 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -1534,10 +1534,10 @@ COMPAT_SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes, #endif #ifdef CONFIG_COMPAT_32BIT_TIME -static int compat_prepare_timeout(const struct compat_timespec __user *p, +static int compat_prepare_timeout(const struct old_timespec32 __user *p, struct timespec64 *ts) { - if (compat_get_timespec64(ts, p)) + if (get_old_timespec32(ts, p)) return -EFAULT; if (!timespec64_valid(ts)) return -EINVAL; @@ -1547,7 +1547,7 @@ static int compat_prepare_timeout(const struct compat_timespec __user *p, COMPAT_SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr, compat_size_t, msg_len, unsigned int, msg_prio, - const struct compat_timespec __user *, u_abs_timeout) + const struct old_timespec32 __user *, u_abs_timeout) { struct timespec64 ts, *p = NULL; if (u_abs_timeout) { @@ -1562,7 +1562,7 @@ COMPAT_SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, COMPAT_SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr, compat_size_t, msg_len, unsigned int __user *, u_msg_prio, - const struct compat_timespec __user *, u_abs_timeout) + const struct old_timespec32 __user *, u_abs_timeout) { struct timespec64 ts, *p = NULL; if (u_abs_timeout) { diff --git a/ipc/msg.c b/ipc/msg.c index decefbd062a8..fc85d852296f 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -622,9 +622,9 @@ struct compat_msqid_ds { struct compat_ipc_perm msg_perm; compat_uptr_t msg_first; compat_uptr_t msg_last; - compat_time_t msg_stime; - compat_time_t msg_rtime; - compat_time_t msg_ctime; + old_time32_t msg_stime; + old_time32_t msg_rtime; + old_time32_t msg_ctime; compat_ulong_t msg_lcbytes; compat_ulong_t msg_lqbytes; unsigned short msg_cbytes; diff --git a/ipc/sem.c b/ipc/sem.c index 6cbbf34a44ac..47ba7a1fde54 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -1698,8 +1698,8 @@ SYSCALL_DEFINE4(semctl, int, semid, int, semnum, int, cmd, unsigned long, arg) struct compat_semid_ds { struct compat_ipc_perm sem_perm; - compat_time_t sem_otime; - compat_time_t sem_ctime; + old_time32_t sem_otime; + old_time32_t sem_ctime; compat_uptr_t sem_base; compat_uptr_t sem_pending; compat_uptr_t sem_pending_last; @@ -2214,11 +2214,11 @@ SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops, #ifdef CONFIG_COMPAT_32BIT_TIME long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, unsigned int nsops, - const struct compat_timespec __user *timeout) + const struct old_timespec32 __user *timeout) { if (timeout) { struct timespec64 ts; - if (compat_get_timespec64(&ts, timeout)) + if (get_old_timespec32(&ts, timeout)) return -EFAULT; return do_semtimedop(semid, tsems, nsops, &ts); } @@ -2227,7 +2227,7 @@ long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, COMPAT_SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsems, unsigned int, nsops, - const struct compat_timespec __user *, timeout) + const struct old_timespec32 __user *, timeout) { return compat_ksys_semtimedop(semid, tsems, nsops, timeout); } diff --git a/ipc/shm.c b/ipc/shm.c index 584eddfb88fc..7a60a542fe79 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -1172,9 +1172,9 @@ SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf) struct compat_shmid_ds { struct compat_ipc_perm shm_perm; int shm_segsz; - compat_time_t shm_atime; - compat_time_t shm_dtime; - compat_time_t shm_ctime; + old_time32_t shm_atime; + old_time32_t shm_dtime; + old_time32_t shm_ctime; compat_ipc_pid_t shm_cpid; compat_ipc_pid_t shm_lpid; unsigned short shm_nattch; diff --git a/ipc/syscall.c b/ipc/syscall.c index 65d405f1ba0c..1ac06e3983c0 100644 --- a/ipc/syscall.c +++ b/ipc/syscall.c @@ -35,7 +35,7 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second, (const struct __kernel_timespec __user *)fifth); else if (IS_ENABLED(CONFIG_COMPAT_32BIT_TIME)) return compat_ksys_semtimedop(first, ptr, second, - (const struct compat_timespec __user *)fifth); + (const struct old_timespec32 __user *)fifth); else return -ENOSYS; diff --git a/ipc/util.h b/ipc/util.h index 9a8a40de3682..b4d0794513af 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -267,7 +267,7 @@ long ksys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); /* for CONFIG_ARCH_WANT_OLD_COMPAT_IPC */ long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems, unsigned int nsops, - const struct compat_timespec __user *timeout); + const struct old_timespec32 __user *timeout); #ifdef CONFIG_COMPAT long compat_ksys_semctl(int semid, int semnum, int cmd, int arg); long compat_ksys_msgctl(int msqid, int cmd, void __user *uptr); diff --git a/kernel/compat.c b/kernel/compat.c index 8e40efc2928a..089d00d0da9c 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -93,28 +93,28 @@ int compat_put_timex(struct compat_timex __user *utp, const struct timex *txc) return 0; } -static int __compat_get_timeval(struct timeval *tv, const struct compat_timeval __user *ctv) +static int __compat_get_timeval(struct timeval *tv, const struct old_timeval32 __user *ctv) { return (!access_ok(VERIFY_READ, ctv, sizeof(*ctv)) || __get_user(tv->tv_sec, &ctv->tv_sec) || __get_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0; } -static int __compat_put_timeval(const struct timeval *tv, struct compat_timeval __user *ctv) +static int __compat_put_timeval(const struct timeval *tv, struct old_timeval32 __user *ctv) { return (!access_ok(VERIFY_WRITE, ctv, sizeof(*ctv)) || __put_user(tv->tv_sec, &ctv->tv_sec) || __put_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0; } -static int __compat_get_timespec(struct timespec *ts, const struct compat_timespec __user *cts) +static int __compat_get_timespec(struct timespec *ts, const struct old_timespec32 __user *cts) { return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) || __get_user(ts->tv_sec, &cts->tv_sec) || __get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0; } -static int __compat_put_timespec(const struct timespec *ts, struct compat_timespec __user *cts) +static int __compat_put_timespec(const struct timespec *ts, struct old_timespec32 __user *cts) { return (!access_ok(VERIFY_WRITE, cts, sizeof(*cts)) || __put_user(ts->tv_sec, &cts->tv_sec) || diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c index 83f830acbb5f..410a77a8f6e2 100644 --- a/kernel/futex_compat.c +++ b/kernel/futex_compat.c @@ -173,7 +173,7 @@ COMPAT_SYSCALL_DEFINE3(get_robust_list, int, pid, } COMPAT_SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val, - struct compat_timespec __user *, utime, u32 __user *, uaddr2, + struct old_timespec32 __user *, utime, u32 __user *, uaddr2, u32, val3) { struct timespec ts; diff --git a/kernel/sched/core.c b/kernel/sched/core.c index a0065c84e73f..756aba643a28 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5280,13 +5280,13 @@ SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid, #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE2(sched_rr_get_interval, compat_pid_t, pid, - struct compat_timespec __user *, interval) + struct old_timespec32 __user *, interval) { struct timespec64 t; int retval = sched_rr_get_interval(pid, &t); if (retval == 0) - retval = compat_put_timespec64(&t, interval); + retval = put_old_timespec32(&t, interval); return retval; } #endif diff --git a/kernel/signal.c b/kernel/signal.c index 786bacc60649..bc87ed06cbae 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3127,7 +3127,7 @@ SYSCALL_DEFINE4(rt_sigtimedwait, const sigset_t __user *, uthese, #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE4(rt_sigtimedwait, compat_sigset_t __user *, uthese, struct compat_siginfo __user *, uinfo, - struct compat_timespec __user *, uts, compat_size_t, sigsetsize) + struct old_timespec32 __user *, uts, compat_size_t, sigsetsize) { sigset_t s; struct timespec t; diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 3e93c54bd3a1..d1190e9fe3f8 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -1661,7 +1661,7 @@ int nanosleep_copyout(struct restart_block *restart, struct timespec64 *ts) switch(restart->nanosleep.type) { #ifdef CONFIG_COMPAT_32BIT_TIME case TT_COMPAT: - if (compat_put_timespec64(ts, restart->nanosleep.compat_rmtp)) + if (put_old_timespec32(ts, restart->nanosleep.compat_rmtp)) return -EFAULT; break; #endif @@ -1781,12 +1781,12 @@ SYSCALL_DEFINE2(nanosleep, struct __kernel_timespec __user *, rqtp, #ifdef CONFIG_COMPAT_32BIT_TIME -COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp, - struct compat_timespec __user *, rmtp) +COMPAT_SYSCALL_DEFINE2(nanosleep, struct old_timespec32 __user *, rqtp, + struct old_timespec32 __user *, rmtp) { struct timespec64 tu; - if (compat_get_timespec64(&tu, rqtp)) + if (get_old_timespec32(&tu, rqtp)) return -EFAULT; if (!timespec64_valid(&tu)) diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c index 2c6847d5d69b..989ccf028bde 100644 --- a/kernel/time/posix-stubs.c +++ b/kernel/time/posix-stubs.c @@ -162,20 +162,20 @@ COMPAT_SYS_NI(setitimer); #ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock, - struct compat_timespec __user *, tp) + struct old_timespec32 __user *, tp) { struct timespec64 new_tp; if (which_clock != CLOCK_REALTIME) return -EINVAL; - if (compat_get_timespec64(&new_tp, tp)) + if (get_old_timespec32(&new_tp, tp)) return -EFAULT; return do_sys_settimeofday64(&new_tp, NULL); } COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock, - struct compat_timespec __user *, tp) + struct old_timespec32 __user *, tp) { int ret; struct timespec64 kernel_tp; @@ -184,13 +184,13 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock, if (ret) return ret; - if (compat_put_timespec64(&kernel_tp, tp)) + if (put_old_timespec32(&kernel_tp, tp)) return -EFAULT; return 0; } COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, - struct compat_timespec __user *, tp) + struct old_timespec32 __user *, tp) { struct timespec64 rtn_tp = { .tv_sec = 0, @@ -201,7 +201,7 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, case CLOCK_REALTIME: case CLOCK_MONOTONIC: case CLOCK_BOOTTIME: - if (compat_put_timespec64(&rtn_tp, tp)) + if (put_old_timespec32(&rtn_tp, tp)) return -EFAULT; return 0; default: @@ -210,8 +210,8 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, } COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, - struct compat_timespec __user *, rqtp, - struct compat_timespec __user *, rmtp) + struct old_timespec32 __user *, rqtp, + struct old_timespec32 __user *, rmtp) { struct timespec64 t; @@ -224,7 +224,7 @@ COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, return -EINVAL; } - if (compat_get_timespec64(&t, rqtp)) + if (get_old_timespec32(&t, rqtp)) return -EFAULT; if (!timespec64_valid(&t)) return -EINVAL; diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 3ac7295306dc..8695d444d3b7 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -767,13 +767,13 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id, #ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id, - struct compat_itimerspec __user *, setting) + struct old_itimerspec32 __user *, setting) { struct itimerspec64 cur_setting; int ret = do_timer_gettime(timer_id, &cur_setting); if (!ret) { - if (put_compat_itimerspec64(&cur_setting, setting)) + if (put_old_itimerspec32(&cur_setting, setting)) ret = -EFAULT; } return ret; @@ -940,8 +940,8 @@ SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags, #ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags, - struct compat_itimerspec __user *, new, - struct compat_itimerspec __user *, old) + struct old_itimerspec32 __user *, new, + struct old_itimerspec32 __user *, old) { struct itimerspec64 new_spec, old_spec; struct itimerspec64 *rtn = old ? &old_spec : NULL; @@ -949,12 +949,12 @@ COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags, if (!new) return -EINVAL; - if (get_compat_itimerspec64(&new_spec, new)) + if (get_old_itimerspec32(&new_spec, new)) return -EFAULT; error = do_timer_settime(timer_id, flags, &new_spec, rtn); if (!error && old) { - if (put_compat_itimerspec64(&old_spec, old)) + if (put_old_itimerspec32(&old_spec, old)) error = -EFAULT; } return error; @@ -1127,7 +1127,7 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock, #ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock, - struct compat_timespec __user *, tp) + struct old_timespec32 __user *, tp) { const struct k_clock *kc = clockid_to_kclock(which_clock); struct timespec64 ts; @@ -1135,14 +1135,14 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock, if (!kc || !kc->clock_set) return -EINVAL; - if (compat_get_timespec64(&ts, tp)) + if (get_old_timespec32(&ts, tp)) return -EFAULT; return kc->clock_set(which_clock, &ts); } COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock, - struct compat_timespec __user *, tp) + struct old_timespec32 __user *, tp) { const struct k_clock *kc = clockid_to_kclock(which_clock); struct timespec64 ts; @@ -1153,7 +1153,7 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock, err = kc->clock_get(which_clock, &ts); - if (!err && compat_put_timespec64(&ts, tp)) + if (!err && put_old_timespec32(&ts, tp)) err = -EFAULT; return err; @@ -1192,7 +1192,7 @@ COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock, #ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, - struct compat_timespec __user *, tp) + struct old_timespec32 __user *, tp) { const struct k_clock *kc = clockid_to_kclock(which_clock); struct timespec64 ts; @@ -1202,7 +1202,7 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock, return -EINVAL; err = kc->clock_getres(which_clock, &ts); - if (!err && tp && compat_put_timespec64(&ts, tp)) + if (!err && tp && put_old_timespec32(&ts, tp)) return -EFAULT; return err; @@ -1249,8 +1249,8 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags, #ifdef CONFIG_COMPAT_32BIT_TIME COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, - struct compat_timespec __user *, rqtp, - struct compat_timespec __user *, rmtp) + struct old_timespec32 __user *, rqtp, + struct old_timespec32 __user *, rmtp) { const struct k_clock *kc = clockid_to_kclock(which_clock); struct timespec64 t; @@ -1260,7 +1260,7 @@ COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags, if (!kc->nsleep) return -ENANOSLEEP_NOTSUP; - if (compat_get_timespec64(&t, rqtp)) + if (get_old_timespec32(&t, rqtp)) return -EFAULT; if (!timespec64_valid(&t)) diff --git a/kernel/time/time.c b/kernel/time/time.c index ccdb351277ee..a6215551333a 100644 --- a/kernel/time/time.c +++ b/kernel/time/time.c @@ -104,12 +104,12 @@ SYSCALL_DEFINE1(stime, time_t __user *, tptr) #ifdef CONFIG_COMPAT #ifdef __ARCH_WANT_COMPAT_SYS_TIME -/* compat_time_t is a 32 bit "long" and needs to get converted. */ -COMPAT_SYSCALL_DEFINE1(time, compat_time_t __user *, tloc) +/* old_time32_t is a 32 bit "long" and needs to get converted. */ +COMPAT_SYSCALL_DEFINE1(time, old_time32_t __user *, tloc) { - compat_time_t i; + old_time32_t i; - i = (compat_time_t)ktime_get_real_seconds(); + i = (old_time32_t)ktime_get_real_seconds(); if (tloc) { if (put_user(i,tloc)) @@ -119,7 +119,7 @@ COMPAT_SYSCALL_DEFINE1(time, compat_time_t __user *, tloc) return i; } -COMPAT_SYSCALL_DEFINE1(stime, compat_time_t __user *, tptr) +COMPAT_SYSCALL_DEFINE1(stime, old_time32_t __user *, tptr) { struct timespec64 tv; int err; @@ -223,7 +223,7 @@ SYSCALL_DEFINE2(settimeofday, struct timeval __user *, tv, } #ifdef CONFIG_COMPAT -COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv, +COMPAT_SYSCALL_DEFINE2(gettimeofday, struct old_timeval32 __user *, tv, struct timezone __user *, tz) { if (tv) { @@ -241,7 +241,7 @@ COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv, return 0; } -COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv, +COMPAT_SYSCALL_DEFINE2(settimeofday, struct old_timeval32 __user *, tv, struct timezone __user *, tz) { struct timespec64 new_ts; @@ -884,10 +884,10 @@ int put_timespec64(const struct timespec64 *ts, } EXPORT_SYMBOL_GPL(put_timespec64); -int __compat_get_timespec64(struct timespec64 *ts64, - const struct compat_timespec __user *cts) +int __get_old_timespec32(struct timespec64 *ts64, + const struct old_timespec32 __user *cts) { - struct compat_timespec ts; + struct old_timespec32 ts; int ret; ret = copy_from_user(&ts, cts, sizeof(ts)); @@ -900,33 +900,33 @@ int __compat_get_timespec64(struct timespec64 *ts64, return 0; } -int __compat_put_timespec64(const struct timespec64 *ts64, - struct compat_timespec __user *cts) +int __put_old_timespec32(const struct timespec64 *ts64, + struct old_timespec32 __user *cts) { - struct compat_timespec ts = { + struct old_timespec32 ts = { .tv_sec = ts64->tv_sec, .tv_nsec = ts64->tv_nsec }; return copy_to_user(cts, &ts, sizeof(ts)) ? -EFAULT : 0; } -int compat_get_timespec64(struct timespec64 *ts, const void __user *uts) +int get_old_timespec32(struct timespec64 *ts, const void __user *uts) { if (COMPAT_USE_64BIT_TIME) return copy_from_user(ts, uts, sizeof(*ts)) ? -EFAULT : 0; else - return __compat_get_timespec64(ts, uts); + return __get_old_timespec32(ts, uts); } -EXPORT_SYMBOL_GPL(compat_get_timespec64); +EXPORT_SYMBOL_GPL(get_old_timespec32); -int compat_put_timespec64(const struct timespec64 *ts, void __user *uts) +int put_old_timespec32(const struct timespec64 *ts, void __user *uts) { if (COMPAT_USE_64BIT_TIME) return copy_to_user(uts, ts, sizeof(*ts)) ? -EFAULT : 0; else - return __compat_put_timespec64(ts, uts); + return __put_old_timespec32(ts, uts); } -EXPORT_SYMBOL_GPL(compat_put_timespec64); +EXPORT_SYMBOL_GPL(put_old_timespec32); int get_itimerspec64(struct itimerspec64 *it, const struct __kernel_itimerspec __user *uit) @@ -958,23 +958,23 @@ int put_itimerspec64(const struct itimerspec64 *it, } EXPORT_SYMBOL_GPL(put_itimerspec64); -int get_compat_itimerspec64(struct itimerspec64 *its, - const struct compat_itimerspec __user *uits) +int get_old_itimerspec32(struct itimerspec64 *its, + const struct old_itimerspec32 __user *uits) { - if (__compat_get_timespec64(&its->it_interval, &uits->it_interval) || - __compat_get_timespec64(&its->it_value, &uits->it_value)) + if (__get_old_timespec32(&its->it_interval, &uits->it_interval) || + __get_old_timespec32(&its->it_value, &uits->it_value)) return -EFAULT; return 0; } -EXPORT_SYMBOL_GPL(get_compat_itimerspec64); +EXPORT_SYMBOL_GPL(get_old_itimerspec32); -int put_compat_itimerspec64(const struct itimerspec64 *its, - struct compat_itimerspec __user *uits) +int put_old_itimerspec32(const struct itimerspec64 *its, + struct old_itimerspec32 __user *uits) { - if (__compat_put_timespec64(&its->it_interval, &uits->it_interval) || - __compat_put_timespec64(&its->it_value, &uits->it_value)) + if (__put_old_timespec32(&its->it_interval, &uits->it_interval) || + __put_old_timespec32(&its->it_value, &uits->it_value)) return -EFAULT; return 0; } -EXPORT_SYMBOL_GPL(put_compat_itimerspec64); +EXPORT_SYMBOL_GPL(put_old_itimerspec32); diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 1506e1632394..4f4e20ffbd0b 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -1383,7 +1383,7 @@ static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, if (mask & HCI_CMSG_TSTAMP) { #ifdef CONFIG_COMPAT - struct compat_timeval ctv; + struct old_timeval32 ctv; #endif struct timeval tv; void *data; diff --git a/net/compat.c b/net/compat.c index 7242cce5631b..c07d6539d7c7 100644 --- a/net/compat.c +++ b/net/compat.c @@ -209,8 +209,8 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat { struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; struct compat_cmsghdr cmhdr; - struct compat_timeval ctv; - struct compat_timespec cts[3]; + struct old_timeval32 ctv; + struct old_timespec32 cts[3]; int cmlen; if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { @@ -351,7 +351,7 @@ static int do_set_attach_filter(struct socket *sock, int level, int optname, static int do_set_sock_timeout(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) { - struct compat_timeval __user *up = (struct compat_timeval __user *)optval; + struct old_timeval32 __user *up = (struct old_timeval32 __user *)optval; struct timeval ktime; mm_segment_t old_fs; int err; @@ -420,12 +420,12 @@ COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, static int do_get_sock_timeout(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { - struct compat_timeval __user *up; + struct old_timeval32 __user *up; struct timeval ktime; mm_segment_t old_fs; int len, err; - up = (struct compat_timeval __user *) optval; + up = (struct old_timeval32 __user *) optval; if (get_user(len, optlen)) return -EFAULT; if (len < sizeof(*up)) @@ -457,14 +457,14 @@ static int compat_sock_getsockopt(struct socket *sock, int level, int optname, int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp) { - struct compat_timeval __user *ctv; + struct old_timeval32 __user *ctv; int err; struct timeval tv; if (COMPAT_USE_64BIT_TIME) return sock_get_timestamp(sk, userstamp); - ctv = (struct compat_timeval __user *) userstamp; + ctv = (struct old_timeval32 __user *) userstamp; err = -ENOENT; if (!sock_flag(sk, SOCK_TIMESTAMP)) sock_enable_timestamp(sk, SOCK_TIMESTAMP); @@ -485,14 +485,14 @@ EXPORT_SYMBOL(compat_sock_get_timestamp); int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp) { - struct compat_timespec __user *ctv; + struct old_timespec32 __user *ctv; int err; struct timespec ts; if (COMPAT_USE_64BIT_TIME) return sock_get_timestampns (sk, userstamp); - ctv = (struct compat_timespec __user *) userstamp; + ctv = (struct old_timespec32 __user *) userstamp; err = -ENOENT; if (!sock_flag(sk, SOCK_TIMESTAMP)) sock_enable_timestamp(sk, SOCK_TIMESTAMP); @@ -814,7 +814,7 @@ COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len static int __compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, - struct compat_timespec __user *timeout) + struct old_timespec32 __user *timeout) { int datagrams; struct timespec ktspec; @@ -836,7 +836,7 @@ static int __compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags, - struct compat_timespec __user *, timeout) + struct old_timespec32 __user *, timeout) { return __compat_sys_recvmmsg(fd, mmsg, vlen, flags, timeout); } diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c index 946ab080ac00..58b3d9626d86 100644 --- a/sound/core/pcm_compat.c +++ b/sound/core/pcm_compat.c @@ -184,8 +184,8 @@ static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, struct snd_pcm_status32 { s32 state; - struct compat_timespec trigger_tstamp; - struct compat_timespec tstamp; + struct old_timespec32 trigger_tstamp; + struct old_timespec32 tstamp; u32 appl_ptr; u32 hw_ptr; s32 delay; @@ -194,10 +194,10 @@ struct snd_pcm_status32 { u32 overrange; s32 suspended_state; u32 audio_tstamp_data; - struct compat_timespec audio_tstamp; - struct compat_timespec driver_tstamp; + struct old_timespec32 audio_tstamp; + struct old_timespec32 driver_tstamp; u32 audio_tstamp_accuracy; - unsigned char reserved[52-2*sizeof(struct compat_timespec)]; + unsigned char reserved[52-2*sizeof(struct old_timespec32)]; } __attribute__((packed)); @@ -455,9 +455,9 @@ struct snd_pcm_mmap_status32 { s32 state; s32 pad1; u32 hw_ptr; - struct compat_timespec tstamp; + struct old_timespec32 tstamp; s32 suspended_state; - struct compat_timespec audio_tstamp; + struct old_timespec32 audio_tstamp; } __attribute__((packed)); struct snd_pcm_mmap_control32 { diff --git a/sound/core/rawmidi_compat.c b/sound/core/rawmidi_compat.c index e30e30ba6e39..0b3ac672dc41 100644 --- a/sound/core/rawmidi_compat.c +++ b/sound/core/rawmidi_compat.c @@ -57,7 +57,7 @@ static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile, struct snd_rawmidi_status32 { s32 stream; - struct compat_timespec tstamp; + struct old_timespec32 tstamp; u32 avail; u32 xruns; unsigned char reserved[16]; diff --git a/sound/core/timer_compat.c b/sound/core/timer_compat.c index e00f7e399e46..212cb7287b66 100644 --- a/sound/core/timer_compat.c +++ b/sound/core/timer_compat.c @@ -84,7 +84,7 @@ static int snd_timer_user_info_compat(struct file *file, } struct snd_timer_status32 { - struct compat_timespec tstamp; + struct old_timespec32 tstamp; u32 resolution; u32 lost; u32 overrun; -- 2.9.0

6 years, 4 months

[PATCH] [RESEND] fuse: convert last timespec use to timespec64

by Arnd Bergmann

All of fuse uses 64-bit timestamps with the exception of the fuse_change_attributes(), so let's convert this one as well. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- I submitted this on June 20 but got no reply. Miklos, could you pick this up for 4.19? --- fs/fuse/inode.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 85b3954945af..f6f46bb5ef4b 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -209,7 +209,7 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, struct fuse_inode *fi = get_fuse_inode(inode); bool is_wb = fc->writeback_cache; loff_t oldsize; - struct timespec old_mtime; + struct timespec64 old_mtime; spin_lock(&fc->lock); if ((attr_version != 0 && fi->attr_version > attr_version) || @@ -218,7 +218,7 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, return; } - old_mtime = timespec64_to_timespec(inode->i_mtime); + old_mtime = inode->i_mtime; fuse_change_attributes_common(inode, attr, attr_valid); oldsize = inode->i_size; @@ -238,7 +238,7 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, truncate_pagecache(inode, attr->size); inval = true; } else if (fc->auto_inval_data) { - struct timespec new_mtime = { + struct timespec64 new_mtime = { .tv_sec = attr->mtime, .tv_nsec = attr->mtimensec, }; @@ -247,7 +247,7 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, * Auto inval mode also checks and invalidates if mtime * has changed. */ - if (!timespec_equal(&old_mtime, &new_mtime)) + if (!timespec64_equal(&old_mtime, &new_mtime)) inval = true; } -- 2.9.0

6 years, 4 months

[PATCH 1/5] ceph: use timespec64 in for keepalive

by Arnd Bergmann

ceph_con_keepalive_expired() is the last user of timespec_add() and some of the last uses of ktime_get_real_ts(). Replacing this with timespec64 based interfaces lets us remove that deprecated API. I'm introducing new ceph_encode_timespec64()/ceph_decode_timespec64() here that take timespec64 structures and convert to/from ceph_timespec, which is defined to have an unsigned 32-bit tv_sec member. This extends the range of valid times to year 2106, avoiding the year 2038 overflow. The ceph file system portion still uses the old functions for inode timestamps, this will be done separately after the VFS layer is converted. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- include/linux/ceph/decode.h | 20 +++++++++++++++++++- include/linux/ceph/messenger.h | 2 +- net/ceph/auth_x.c | 14 +++++++------- net/ceph/auth_x.h | 2 +- net/ceph/cls_lock_client.c | 4 ++-- net/ceph/messenger.c | 20 ++++++++++---------- 6 files changed, 40 insertions(+), 22 deletions(-) diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h index d143ac8879c6..45efe09fb7b4 100644 --- a/include/linux/ceph/decode.h +++ b/include/linux/ceph/decode.h @@ -194,8 +194,26 @@ ceph_decode_skip_n(p, end, sizeof(u8), bad) } while (0) /* - * struct ceph_timespec <-> struct timespec + * struct ceph_timespec <-> struct timespec64 */ +static inline void ceph_decode_timespec64(struct timespec64 *ts, + const struct ceph_timespec *tv) +{ + /* + * this will still overflow in year 2106. We could extend + * the protocol to steal two more bits from tv_nsec to + * add three more 136 year epochs after that the way ext4 + * does if necessary. + */ + ts->tv_sec = (time64_t)le32_to_cpu(tv->tv_sec); + ts->tv_nsec = (long)le32_to_cpu(tv->tv_nsec); +} +static inline void ceph_encode_timespec64(struct ceph_timespec *tv, + const struct timespec64 *ts) +{ + tv->tv_sec = cpu_to_le32((u32)ts->tv_sec); + tv->tv_nsec = cpu_to_le32((u32)ts->tv_nsec); +} static inline void ceph_decode_timespec(struct timespec *ts, const struct ceph_timespec *tv) { diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index c7dfcb8a1fb2..a718b877c597 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -330,7 +330,7 @@ struct ceph_connection { int in_base_pos; /* bytes read */ __le64 in_temp_ack; /* for reading an ack */ - struct timespec last_keepalive_ack; /* keepalive2 ack stamp */ + struct timespec64 last_keepalive_ack; /* keepalive2 ack stamp */ struct delayed_work work; /* send|recv work */ unsigned long delay; /* current delay interval */ diff --git a/net/ceph/auth_x.c b/net/ceph/auth_x.c index 2f4a1baf5f52..b05c3a540a5a 100644 --- a/net/ceph/auth_x.c +++ b/net/ceph/auth_x.c @@ -149,12 +149,12 @@ static int process_one_ticket(struct ceph_auth_client *ac, void *dp, *dend; int dlen; char is_enc; - struct timespec validity; + struct timespec64 validity; void *tp, *tpend; void **ptp; struct ceph_crypto_key new_session_key = { 0 }; struct ceph_buffer *new_ticket_blob; - unsigned long new_expires, new_renew_after; + time64_t new_expires, new_renew_after; u64 new_secret_id; int ret; @@ -189,11 +189,11 @@ static int process_one_ticket(struct ceph_auth_client *ac, if (ret) goto out; - ceph_decode_timespec(&validity, dp); + ceph_decode_timespec64(&validity, dp); dp += sizeof(struct ceph_timespec); - new_expires = get_seconds() + validity.tv_sec; + new_expires = ktime_get_real_seconds() + validity.tv_sec; new_renew_after = new_expires - (validity.tv_sec / 4); - dout(" expires=%lu renew_after=%lu\n", new_expires, + dout(" expires=%llu renew_after=%llu\n", new_expires, new_renew_after); /* ticket blob for service */ @@ -385,13 +385,13 @@ static bool need_key(struct ceph_x_ticket_handler *th) if (!th->have_key) return true; - return get_seconds() >= th->renew_after; + return ktime_get_real_seconds() >= th->renew_after; } static bool have_key(struct ceph_x_ticket_handler *th) { if (th->have_key) { - if (get_seconds() >= th->expires) + if (ktime_get_real_seconds() >= th->expires) th->have_key = false; } diff --git a/net/ceph/auth_x.h b/net/ceph/auth_x.h index 454cb54568af..57ba99f7736f 100644 --- a/net/ceph/auth_x.h +++ b/net/ceph/auth_x.h @@ -22,7 +22,7 @@ struct ceph_x_ticket_handler { u64 secret_id; struct ceph_buffer *ticket_blob; - unsigned long renew_after, expires; + time64_t renew_after, expires; }; #define CEPHX_AU_ENC_BUF_LEN 128 /* big enough for encrypted blob */ diff --git a/net/ceph/cls_lock_client.c b/net/ceph/cls_lock_client.c index 8d2032b2f225..2105a6eaa66c 100644 --- a/net/ceph/cls_lock_client.c +++ b/net/ceph/cls_lock_client.c @@ -32,7 +32,7 @@ int ceph_cls_lock(struct ceph_osd_client *osdc, int desc_len = strlen(desc); void *p, *end; struct page *lock_op_page; - struct timespec mtime; + struct timespec64 mtime; int ret; lock_op_buf_size = name_len + sizeof(__le32) + @@ -63,7 +63,7 @@ int ceph_cls_lock(struct ceph_osd_client *osdc, ceph_encode_string(&p, end, desc, desc_len); /* only support infinite duration */ memset(&mtime, 0, sizeof(mtime)); - ceph_encode_timespec(p, &mtime); + ceph_encode_timespec64(p, &mtime); p += sizeof(struct ceph_timespec); ceph_encode_8(&p, flags); diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index c6413c360771..3f6336248509 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -1417,11 +1417,11 @@ static void prepare_write_keepalive(struct ceph_connection *con) dout("prepare_write_keepalive %p\n", con); con_out_kvec_reset(con); if (con->peer_features & CEPH_FEATURE_MSGR_KEEPALIVE2) { - struct timespec now; + struct timespec64 now; - ktime_get_real_ts(&now); + ktime_get_real_ts64(&now); con_out_kvec_add(con, sizeof(tag_keepalive2), &tag_keepalive2); - ceph_encode_timespec(&con->out_temp_keepalive2, &now); + ceph_encode_timespec64(&con->out_temp_keepalive2, &now); con_out_kvec_add(con, sizeof(con->out_temp_keepalive2), &con->out_temp_keepalive2); } else { @@ -2555,7 +2555,7 @@ static int read_keepalive_ack(struct ceph_connection *con) int ret = read_partial(con, size, size, &ceph_ts); if (ret <= 0) return ret; - ceph_decode_timespec(&con->last_keepalive_ack, &ceph_ts); + ceph_decode_timespec64(&con->last_keepalive_ack, &ceph_ts); prepare_read_tag(con); return 1; } @@ -3223,12 +3223,12 @@ bool ceph_con_keepalive_expired(struct ceph_connection *con, { if (interval > 0 && (con->peer_features & CEPH_FEATURE_MSGR_KEEPALIVE2)) { - struct timespec now; - struct timespec ts; - ktime_get_real_ts(&now); - jiffies_to_timespec(interval, &ts); - ts = timespec_add(con->last_keepalive_ack, ts); - return timespec_compare(&now, &ts) >= 0; + struct timespec64 now; + struct timespec64 ts; + ktime_get_real_ts64(&now); + jiffies_to_timespec64(interval, &ts); + ts = timespec64_add(con->last_keepalive_ack, ts); + return timespec64_compare(&now, &ts) >= 0; } return false; } -- 2.9.0

6 years, 4 months

[PATCH] [v2] bcache: stop using the deprecated get_seconds()

by Arnd Bergmann

The get_seconds function is deprecated now since it returns a 32-bit value that will eventually overflow, and we are replacing it throughout the kernel with ktime_get_seconds() or ktime_get_real_seconds() that return a time64_t. bcache uses get_seconds() to read the current system time and store it in the superblock as well as in uuid_entry structures that are user visible. Unfortunately, the two structures in are still limited to 32 bits, so this won't fix any real problems but will still overflow in year 2106. Let's at least document that properly, in case we get an updated format in the future it can be fixed. We still have a long time before the overflow and checking the tools at https://github.com/koverstreet/bcache-tools reveals no access to any of them. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/md/bcache/super.c | 12 ++++++------ include/uapi/linux/bcache.h | 4 ++-- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index fa4058e43202..74746d8ee05e 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -181,7 +181,7 @@ static const char *read_super(struct cache_sb *sb, struct block_device *bdev, goto err; } - sb->last_mount = get_seconds(); + sb->last_mount = (u32)ktime_get_real_seconds(); err = NULL; get_page(bh->b_page); @@ -701,7 +701,7 @@ static void bcache_device_detach(struct bcache_device *d) SET_UUID_FLASH_ONLY(u, 0); memcpy(u->uuid, invalid_uuid, 16); - u->invalidated = cpu_to_le32(get_seconds()); + u->invalidated = cpu_to_le32((u32)ktime_get_real_seconds()); bch_uuid_write(d->c); } @@ -1027,7 +1027,7 @@ void bch_cached_dev_detach(struct cached_dev *dc) int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c, uint8_t *set_uuid) { - uint32_t rtime = cpu_to_le32(get_seconds()); + uint32_t rtime = cpu_to_le32((u32)ktime_get_real_seconds()); struct uuid_entry *u; struct cached_dev *exist_dc, *t; @@ -1070,7 +1070,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c, (BDEV_STATE(&dc->sb) == BDEV_STATE_STALE || BDEV_STATE(&dc->sb) == BDEV_STATE_NONE)) { memcpy(u->uuid, invalid_uuid, 16); - u->invalidated = cpu_to_le32(get_seconds()); + u->invalidated = cpu_to_le32((u32)ktime_get_real_seconds()); u = NULL; } @@ -1390,7 +1390,7 @@ int bch_flash_dev_create(struct cache_set *c, uint64_t size) get_random_bytes(u->uuid, 16); memset(u->label, 0, 32); - u->first_reg = u->last_reg = cpu_to_le32(get_seconds()); + u->first_reg = u->last_reg = cpu_to_le32((u32)ktime_get_real_seconds()); SET_UUID_FLASH_ONLY(u, 1); u->sectors = size >> 9; @@ -1894,7 +1894,7 @@ static void run_cache_set(struct cache_set *c) goto err; closure_sync(&cl); - c->sb.last_mount = get_seconds(); + c->sb.last_mount = (u32)ktime_get_real_seconds(); bcache_write_super(c); list_for_each_entry_safe(dc, t, &uncached_devices, list) diff --git a/include/uapi/linux/bcache.h b/include/uapi/linux/bcache.h index 821f71a2e48f..8d19e02d752a 100644 --- a/include/uapi/linux/bcache.h +++ b/include/uapi/linux/bcache.h @@ -195,7 +195,7 @@ struct cache_sb { }; }; - __u32 last_mount; /* time_t */ + __u32 last_mount; /* time overflow in y2106 */ __u16 first_bucket; union { @@ -318,7 +318,7 @@ struct uuid_entry { struct { __u8 uuid[16]; __u8 label[32]; - __u32 first_reg; + __u32 first_reg; /* time overflow in y2106 */ __u32 last_reg; __u32 invalidated; -- 2.9.0

6 years, 4 months

[PATCH] [RESEND] f2fs: use timespec64 for inode timestamps

by Arnd Bergmann

The on-disk representation and the vfs both use 64-bit tv_sec values, so let's change the last missing piece in the middle. Reviewed-by: Chao Yu <yuchao0(a)huawei.com> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- I sent this on Jun 20 and got an Ack, but nobody picked up the patch into linux-next. Could you merge this for 4.19? --- fs/f2fs/f2fs.h | 16 ++++++---------- fs/f2fs/inode.c | 12 ++++++------ fs/f2fs/namei.c | 2 +- 3 files changed, 13 insertions(+), 17 deletions(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 6fe7db8d914c..1e49b896e211 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -669,8 +669,8 @@ struct f2fs_inode_info { int i_extra_isize; /* size of extra space located in i_addr */ kprojid_t i_projid; /* id for project quota */ int i_inline_xattr_size; /* inline xattr size */ - struct timespec i_crtime; /* inode creation time */ - struct timespec i_disk_time[4]; /* inode disk times */ + struct timespec64 i_crtime; /* inode creation time */ + struct timespec64 i_disk_time[4];/* inode disk times */ }; static inline void get_extent_info(struct extent_info *ext, @@ -2519,7 +2519,6 @@ static inline void clear_file(struct inode *inode, int type) static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync) { - struct timespec ts; bool ret; if (dsync) { @@ -2535,16 +2534,13 @@ static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync) i_size_read(inode) & ~PAGE_MASK) return false; - ts = timespec64_to_timespec(inode->i_atime); - if (!timespec_equal(F2FS_I(inode)->i_disk_time, &ts)) + if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime)) return false; - ts = timespec64_to_timespec(inode->i_ctime); - if (!timespec_equal(F2FS_I(inode)->i_disk_time + 1, &ts)) + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime)) return false; - ts = timespec64_to_timespec(inode->i_mtime); - if (!timespec_equal(F2FS_I(inode)->i_disk_time + 2, &ts)) + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime)) return false; - if (!timespec_equal(F2FS_I(inode)->i_disk_time + 3, + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3, &F2FS_I(inode)->i_crtime)) return false; diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index f91dd017a65c..f9d1bccebcb6 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -300,9 +300,9 @@ static int do_read_inode(struct inode *inode) fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); } - F2FS_I(inode)->i_disk_time[0] = timespec64_to_timespec(inode->i_atime); - F2FS_I(inode)->i_disk_time[1] = timespec64_to_timespec(inode->i_ctime); - F2FS_I(inode)->i_disk_time[2] = timespec64_to_timespec(inode->i_mtime); + F2FS_I(inode)->i_disk_time[0] = inode->i_atime; + F2FS_I(inode)->i_disk_time[1] = inode->i_ctime; + F2FS_I(inode)->i_disk_time[2] = inode->i_mtime; F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime; f2fs_put_page(node_page, 1); @@ -473,9 +473,9 @@ void f2fs_update_inode(struct inode *inode, struct page *node_page) if (inode->i_nlink == 0) clear_inline_node(node_page); - F2FS_I(inode)->i_disk_time[0] = timespec64_to_timespec(inode->i_atime); - F2FS_I(inode)->i_disk_time[1] = timespec64_to_timespec(inode->i_ctime); - F2FS_I(inode)->i_disk_time[2] = timespec64_to_timespec(inode->i_mtime); + F2FS_I(inode)->i_disk_time[0] = inode->i_atime; + F2FS_I(inode)->i_disk_time[1] = inode->i_ctime; + F2FS_I(inode)->i_disk_time[2] = inode->i_mtime; F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime; } diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 231b7f3ea7d3..2ea0de4cbe76 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -51,7 +51,7 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) inode->i_ino = ino; inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); - F2FS_I(inode)->i_crtime = timespec64_to_timespec(inode->i_mtime); + F2FS_I(inode)->i_crtime = inode->i_mtime; inode->i_generation = sbi->s_next_generation++; if (S_ISDIR(inode->i_mode)) -- 2.9.0

6 years, 4 months

[PATCH] [RESEND] sysvfs: use ktime_get_real_seconds() for superblock stamp

by Arnd Bergmann

get_seconds() is deprecated in favor of ktime_get_real_seconds(), which returns a 64-bit timestamp. In the SYSV file system, the superblock timestamp is only 32 bits wide, and it is used to check whether a file system is clean, so the best solution seems to be to force a wraparound and explicitly convert it to an unsigned 32-bit value. This is independent of the inode timestamps that are also 32-bit wide on disk and that come from current_time(). Acked-by: Thomas Gleixner <tglx(a)linutronix.de> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- Originally sent on Jun 19, got an Ack but no other reply. Christoph apparently hasn't applied any sysvfs patches in many years, so I'd like someone else to take this one. Al or Andrew, could you take this patch for 4.19 as well? --- fs/sysv/inode.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c index 47f66bbc4578..e8927ea70d12 100644 --- a/fs/sysv/inode.c +++ b/fs/sysv/inode.c @@ -35,7 +35,7 @@ static int sysv_sync_fs(struct super_block *sb, int wait) { struct sysv_sb_info *sbi = SYSV_SB(sb); - unsigned long time = get_seconds(), old_time; + u32 time = (u32)ktime_get_real_seconds(), old_time; mutex_lock(&sbi->s_lock); @@ -46,8 +46,8 @@ static int sysv_sync_fs(struct super_block *sb, int wait) */ old_time = fs32_to_cpu(sbi, *sbi->s_sb_time); if (sbi->s_type == FSTYPE_SYSV4) { - if (*sbi->s_sb_state == cpu_to_fs32(sbi, 0x7c269d38 - old_time)) - *sbi->s_sb_state = cpu_to_fs32(sbi, 0x7c269d38 - time); + if (*sbi->s_sb_state == cpu_to_fs32(sbi, 0x7c269d38u - old_time)) + *sbi->s_sb_state = cpu_to_fs32(sbi, 0x7c269d38u - time); *sbi->s_sb_time = cpu_to_fs32(sbi, time); mark_buffer_dirty(sbi->s_bh2); } -- 2.9.0

6 years, 4 months

[PATCH 1/2] [PATCHES] jffs2: use 64-bit intermediate timestamps

by Arnd Bergmann

6 years, 4 months

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Y2038 July 2018