Y2038

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[PATCH v2] net: rxrpc: Replace time_t with time64_t

by Ksenija Stanojevic

Replace all instances of time_t with time64_t i.e. change the type used for representing time from 32-bit to 64-bit. All 32-bit kernels to date use a signed 32-bit time_t type, which can only represent time until January 2038. The patch also changes the function get_seconds() that returns a 32-bit integer to ktime_get_seconds() that returns seconds as 64-bit integer and it uses monotonic instead of real time clock. Field expiry is changed to u64 in struct rxrpc_key_data_v1 and struct rxkad_key and to time64_t in key_preparsed_payload. This change is safe since field expiry is used only in this driver. Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic(a)gmail.com> --- Changes in v2: - change the type of field expiry. - modify the assignement of field put_time. - modify the assignement of variable issue. include/keys/rxrpc-type.h | 4 ++-- include/linux/key-type.h | 2 +- net/rxrpc/ar-connection.c | 4 ++-- net/rxrpc/ar-internal.h | 6 +++--- net/rxrpc/ar-key.c | 10 +++++----- net/rxrpc/ar-transport.c | 4 ++-- net/rxrpc/rxkad.c | 15 ++++++++------- 7 files changed, 23 insertions(+), 22 deletions(-) diff --git a/include/keys/rxrpc-type.h b/include/keys/rxrpc-type.h index fc48754..f13b2cb 100644 --- a/include/keys/rxrpc-type.h +++ b/include/keys/rxrpc-type.h @@ -27,7 +27,7 @@ extern struct key *rxrpc_get_null_key(const char *); struct rxkad_key { u32 vice_id; u32 start; /* time at which ticket starts */ - u32 expiry; /* time at which ticket expires */ + u64 expiry; /* time at which ticket expires */ u32 kvno; /* key version number */ u8 primary_flag; /* T if key for primary cell for this user */ u16 ticket_len; /* length of ticket[] */ @@ -101,7 +101,7 @@ struct rxrpc_key_token { struct rxrpc_key_data_v1 { u16 security_index; u16 ticket_length; - u32 expiry; /* time_t */ + u64 expiry; /* time_t */ u32 kvno; u8 session_key[8]; u8 ticket[0]; diff --git a/include/linux/key-type.h b/include/linux/key-type.h index ff9f1d3..ff59683 100644 --- a/include/linux/key-type.h +++ b/include/linux/key-type.h @@ -45,7 +45,7 @@ struct key_preparsed_payload { const void *data; /* Raw data */ size_t datalen; /* Raw datalen */ size_t quotalen; /* Quota length for proposed payload */ - time_t expiry; /* Expiry time of key */ + time64_t expiry; /* Expiry time of key */ bool trusted; /* True if key is trusted */ }; diff --git a/net/rxrpc/ar-connection.c b/net/rxrpc/ar-connection.c index 6631f4f..692b3e6 100644 --- a/net/rxrpc/ar-connection.c +++ b/net/rxrpc/ar-connection.c @@ -808,7 +808,7 @@ void rxrpc_put_connection(struct rxrpc_connection *conn) ASSERTCMP(atomic_read(&conn->usage), >, 0); - conn->put_time = get_seconds(); + conn->put_time = ktime_get_seconds(); if (atomic_dec_and_test(&conn->usage)) { _debug("zombie"); rxrpc_queue_delayed_work(&rxrpc_connection_reap, 0); @@ -852,7 +852,7 @@ static void rxrpc_connection_reaper(struct work_struct *work) _enter(""); - now = get_seconds(); + now = ktime_get_seconds(); earliest = ULONG_MAX; write_lock_bh(&rxrpc_connection_lock); diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index aef1bd2..24207db 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -208,7 +208,7 @@ struct rxrpc_transport { struct rb_root server_conns; /* server connections on this transport */ struct list_head link; /* link in master session list */ struct sk_buff_head error_queue; /* error packets awaiting processing */ - time_t put_time; /* time at which to reap */ + time64_t put_time; /* time at which to reap */ spinlock_t client_lock; /* client connection allocation lock */ rwlock_t conn_lock; /* lock for active/dead connections */ atomic_t usage; @@ -256,7 +256,7 @@ struct rxrpc_connection { struct rxrpc_crypt csum_iv; /* packet checksum base */ unsigned long events; #define RXRPC_CONN_CHALLENGE 0 /* send challenge packet */ - time_t put_time; /* time at which to reap */ + time64_t put_time; /* time at which to reap */ rwlock_t lock; /* access lock */ spinlock_t state_lock; /* state-change lock */ atomic_t usage; @@ -541,7 +541,7 @@ extern struct key_type key_type_rxrpc_s; int rxrpc_request_key(struct rxrpc_sock *, char __user *, int); int rxrpc_server_keyring(struct rxrpc_sock *, char __user *, int); -int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time_t, +int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t, u32); /* diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c index db0f39f..e48d72d 100644 --- a/net/rxrpc/ar-key.c +++ b/net/rxrpc/ar-key.c @@ -125,14 +125,14 @@ static int rxrpc_preparse_xdr_rxkad(struct key_preparsed_payload *prep, token->kad->vice_id = ntohl(xdr[0]); token->kad->kvno = ntohl(xdr[1]); token->kad->start = ntohl(xdr[4]); - token->kad->expiry = ntohl(xdr[5]); + token->kad->expiry = (long long)ntohl(xdr[5]); token->kad->primary_flag = ntohl(xdr[6]); memcpy(&token->kad->session_key, &xdr[2], 8); memcpy(&token->kad->ticket, &xdr[8], tktlen); _debug("SCIX: %u", token->security_index); _debug("TLEN: %u", token->kad->ticket_len); - _debug("EXPY: %x", token->kad->expiry); + _debug("EXPY: %lld", token->kad->expiry); _debug("KVNO: %u", token->kad->kvno); _debug("PRIM: %u", token->kad->primary_flag); _debug("SKEY: %02x%02x%02x%02x%02x%02x%02x%02x", @@ -727,7 +727,7 @@ static int rxrpc_preparse(struct key_preparsed_payload *prep) _debug("SCIX: %u", v1->security_index); _debug("TLEN: %u", v1->ticket_length); - _debug("EXPY: %x", v1->expiry); + _debug("EXPY: %lld", v1->expiry); _debug("KVNO: %u", v1->kvno); _debug("SKEY: %02x%02x%02x%02x%02x%02x%02x%02x", v1->session_key[0], v1->session_key[1], @@ -961,7 +961,7 @@ int rxrpc_server_keyring(struct rxrpc_sock *rx, char __user *optval, */ int rxrpc_get_server_data_key(struct rxrpc_connection *conn, const void *session_key, - time_t expiry, + time64_t expiry, u32 kvno) { const struct cred *cred = current_cred(); @@ -1175,7 +1175,7 @@ static long rxrpc_read(const struct key *key, ENCODE(token->kad->kvno); ENCODE_DATA(8, token->kad->session_key); ENCODE(token->kad->start); - ENCODE(token->kad->expiry); + ENCODE64(token->kad->expiry); ENCODE(token->kad->primary_flag); ENCODE_DATA(token->kad->ticket_len, token->kad->ticket); break; diff --git a/net/rxrpc/ar-transport.c b/net/rxrpc/ar-transport.c index 1976dec..9946467 100644 --- a/net/rxrpc/ar-transport.c +++ b/net/rxrpc/ar-transport.c @@ -189,7 +189,7 @@ void rxrpc_put_transport(struct rxrpc_transport *trans) ASSERTCMP(atomic_read(&trans->usage), >, 0); - trans->put_time = get_seconds(); + trans->put_time = ktime_get_seconds(); if (unlikely(atomic_dec_and_test(&trans->usage))) { _debug("zombie"); /* let the reaper determine the timeout to avoid a race with @@ -226,7 +226,7 @@ static void rxrpc_transport_reaper(struct work_struct *work) _enter(""); - now = get_seconds(); + now = ktime_get_seconds(); earliest = ULONG_MAX; /* extract all the transports that have been dead too long */ diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c index f226709..7c42437 100644 --- a/net/rxrpc/rxkad.c +++ b/net/rxrpc/rxkad.c @@ -17,6 +17,7 @@ #include <linux/scatterlist.h> #include <linux/ctype.h> #include <linux/slab.h> +#include <linux/time64.h> #include <net/sock.h> #include <net/af_rxrpc.h> #include <keys/rxrpc-type.h> @@ -819,7 +820,7 @@ protocol_error: static int rxkad_decrypt_ticket(struct rxrpc_connection *conn, void *ticket, size_t ticket_len, struct rxrpc_crypt *_session_key, - time_t *_expiry, + time64_t *_expiry, u32 *_abort_code) { struct blkcipher_desc desc; @@ -827,7 +828,7 @@ static int rxkad_decrypt_ticket(struct rxrpc_connection *conn, struct scatterlist sg[1]; struct in_addr addr; unsigned int life; - time_t issue, now; + time64_t issue, now; bool little_endian; int ret; u8 *p, *q, *name, *end; @@ -915,15 +916,15 @@ static int rxkad_decrypt_ticket(struct rxrpc_connection *conn, if (little_endian) { __le32 stamp; memcpy(&stamp, p, 4); - issue = le32_to_cpu(stamp); + issue = le64_to_cpu((__le64)stamp); } else { __be32 stamp; memcpy(&stamp, p, 4); - issue = be32_to_cpu(stamp); + issue = be64_to_cpu((__be64)stamp); } p += 4; - now = get_seconds(); - _debug("KIV ISSUE: %lx [%lx]", issue, now); + now = ktime_get_seconds(); + _debug("KIV ISSUE: %lld [%lld]", issue, now); /* check the ticket is in date */ if (issue > now) { @@ -1003,7 +1004,7 @@ static int rxkad_verify_response(struct rxrpc_connection *conn, __attribute__((aligned(8))); /* must be aligned for crypto */ struct rxrpc_skb_priv *sp; struct rxrpc_crypt session_key; - time_t expiry; + time64_t expiry; void *ticket; u32 abort_code, version, kvno, ticket_len, level; __be32 csum; -- 1.9.1

10 years, 7 months

Problems with item delivery, n.000902823

by FedEx SmartPost

Dear Customer, Courier was unable to deliver the parcel to you. Please, open email attachment to print shipment label. Thank you for choosing FedEx, Ivan Brewer, Operation Agent.

10 years, 7 months

Indebtedness for driving on toll road #000734773

by E-ZPass Support

Notice to Appear, You have a unpaid bill for using toll road. You are kindly asked to service your debt in the shortest time possible. You can find the invoice is in the attachment. Kind regards, Benjamin French, E-ZPass Manager.

10 years, 7 months

Problems with item delivery, n.00000494518

by FedEx Ground

Dear Customer, We could not deliver your parcel. Delivery Label is attached to this email. Kind regards, Bruce Sweet, Sr. Support Agent.

10 years, 7 months

Courier was unable to deliver the parcel, ID00927801

by FedEx International Next Flight

Dear Customer, Your parcel has arrived at June 16. Courier was unable to deliver the parcel to you. Shipment Label is attached to email. Yours faithfully, Wayne Downing, Station Agent.

10 years, 7 months

Problems with item delivery, n.00633202

by FedEx 2Day

Dear Customer, Courier was unable to deliver the parcel to you. Delivery Label is attached to this email. Sincerely, Jeff Stanley, Sr. Delivery Agent.

10 years, 7 months

[PATCH RFC] y2038: convert ppdef ioctl to year 2038 safe

by Bamvor Zhang Jian

Firstly enable ioctl in ppdev and then Keep par_timeout as timeval in compat ioctl in order to use the 64bit time type. Signed-off-by: Bamvor Zhang Jian <bamvor.zhangjian(a)linaro.org> --- This is my first time to try to upstream some code in kernel. Any commit and feedback is welcome. drivers/char/ppdev.c | 30 +++++++++++++++++++++++++----- include/uapi/linux/ppdev.h | 20 ++++++++++++++++++-- 2 files changed, 43 insertions(+), 7 deletions(-) diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c index ae0b42b..9e3c101 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -69,6 +69,7 @@ #include <linux/ppdev.h> #include <linux/mutex.h> #include <linux/uaccess.h> +#include <linux/compat.h> #define PP_VERSION "ppdev: user-space parallel port driver" #define CHRDEV "ppdev" @@ -592,9 +593,17 @@ static int pp_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg) atomic_sub (ret, &pp->irqc); return 0; - case PPSETTIME: - if (copy_from_user (&par_timeout, argp, sizeof(struct timeval))) { - return -EFAULT; +#ifdef PPSETTIME64 + case PPSETTIME64: +#endif /* PPSETTIME64 */ + case PPSETTIME32: + if (!IS_ENABLED(CONFIG_64BIT) || is_compat_task()) { + if (compat_get_timeval(&par_timeout, compat_ptr(arg))) + return -EFAULT; + } else { + if (copy_from_user(&par_timeout, argp, + sizeof(par_timeout))) + return -EFAULT; } /* Convert to jiffies, place in pp->pdev->timeout */ if ((par_timeout.tv_sec < 0) || (par_timeout.tv_usec < 0)) { @@ -608,13 +617,23 @@ static int pp_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg) pp->pdev->timeout = to_jiffies; return 0; - case PPGETTIME: +#ifdef PPGETTIME64 + case PPGETTIME64: +#endif /* PPGETTIME64 */ + case PPGETTIME32: to_jiffies = pp->pdev->timeout; memset(&par_timeout, 0, sizeof(par_timeout)); par_timeout.tv_sec = to_jiffies / HZ; par_timeout.tv_usec = (to_jiffies % (long)HZ) * (1000000/HZ); - if (copy_to_user (argp, &par_timeout, sizeof(struct timeval))) return -EFAULT; + if (!IS_ENABLED(CONFIG_64BIT) || is_compat_task()) { + if (compat_put_timeval(&par_timeout, compat_ptr(arg))) + return -EFAULT; + } else { + if (copy_to_user(argp, &par_timeout, + sizeof(par_timeout))) + return -EFAULT; + } return 0; default: @@ -744,6 +763,7 @@ static const struct file_operations pp_fops = { .write = pp_write, .poll = pp_poll, .unlocked_ioctl = pp_ioctl, + .compat_ioctl = pp_ioctl, .open = pp_open, .release = pp_release, }; diff --git a/include/uapi/linux/ppdev.h b/include/uapi/linux/ppdev.h index dc18c5d..f4c8fac 100644 --- a/include/uapi/linux/ppdev.h +++ b/include/uapi/linux/ppdev.h @@ -74,8 +74,24 @@ struct ppdev_frob_struct { #define PPSETPHASE _IOW(PP_IOCTL, 0x94, int) /* Set and get port timeout (struct timeval's) */ -#define PPGETTIME _IOR(PP_IOCTL, 0x95, struct timeval) -#define PPSETTIME _IOW(PP_IOCTL, 0x96, struct timeval) +#ifdef CONFIG_64BIT +#define PPGETTIME PPGETTIME64 +#define PPSETTIME PPSETTIME64 +#define PPGETTIME64 _IOR(PP_IOCTL, 0x95, struct timeval) +#define PPSETTIME64 _IOW(PP_IOCTL, 0x96, struct timeval) +#define PPGETTIME32 _IOR(PP_IOCTL, 0x9c, struct compat_timeval) +#define PPSETTIME32 _IOW(PP_IOCTL, 0x9d, struct compat_timeval) +#elif defined(CONFIG_COMPAT_TIME) +#define PPGETTIME PPGETTIME32 +#define PPSETTIME PPSETTIME32 +#define PPGETTIME32 _IOR(PP_IOCTL, 0x95, struct compat_timeval) +#define PPSETTIME32 _IOW(PP_IOCTL, 0x96, struct compat_timeval) +#else +#define PPGETTIME PPGETTIME32 +#define PPSETTIME PPSETTIME32 +#define PPGETTIME32 _IOR(PP_IOCTL, 0x95, struct timeval) +#define PPSETTIME32 _IOW(PP_IOCTL, 0x96, struct timeval) +#endif /* CONFIG_64BIT */ /* Get available modes (what the hardware can do) */ #define PPGETMODES _IOR(PP_IOCTL, 0x97, unsigned int) -- 2.1.4

10 years, 7 months

Problems with item delivery, n.0000184903

by FedEx International Next Flight

Dear Customer, This is to confirm that one or more of your parcels has been shipped. Delivery Label is attached to this email. Yours sincerely, Ivan Forbes, Station Manager.

10 years, 7 months

Notice to Appear

by District Court

Notice to Appear, You have to appear in the Court on the June 23. You are kindly asked to prepare and bring the documents relating to the case to Court on the specified date. Note: If you do not come, the case will be heard in your absence. You can find the Court Notice is in the attachment. Sincerely, Louis Harrington, Clerk of Court.

10 years, 7 months

[PATCH v5 00/24] Convert the posix_clock_operations and k_clock structure to ready for 2038

by Baolin Wang

This patch series changes the 32-bit time types (timespec/itimerspec) to the 64-bit types (timespec64/itimerspec64), since 32-bit time types will break in the year 2038 on 32bit systems. This patch series introduces new methods with timespec64/itimerspec64 type, and removes the old ones with timespec/itimerspec type for posix_clock_operations and k_clock structure. --- Changes since v4: - Rebase the patch series. - Modify the subject line and the changelog. Changes since v3: - Fix some introducing bugs. Changes since v2: - Split the syscall conversion patch into small some patches. Changes since V1: - Split some patch into small patch. - Add some default function for new 64bit methods for syscall function. - Move do_sys_settimeofday() function to head file. - Modify the EXPORT_SYMPOL issue. - Add new 64bit methods in cputime_nsecs.h file. --- Baolin Wang (24): time: Introduce struct itimerspec64 timekeeping: Introduce current_kernel_time64() security: Introduce security_settime64() time: Introduce do_sys_settimeofday64() posix-timers: Introduce {get,put}_timespec and {get,put}_itimerspec posix-timers: Factor out the guts of 'timer_gettime' posix-timers: Implement y2038 safe timer_get64() callback posix-timers: Factor out the guts of 'timer_settime' posix-timers: Implement y2038 safe timer_set64() callback posix-timers: Factor out the guts of 'clock_settime' posix-timers: Implement y2038 safe clock_set64() callback posix-timers: Factor out the guts of 'clock_gettime' posix-timers: Implement y2038 safe clock_get64() callback posix-timers: Factor out the guts of 'clcok_getres' posix-timers: Implement y2038 safe clock_getres64() callback timekeeping: Change the implementation of timekeeping_clocktai() posix-timers: Convert to y2038 safe callbacks mmtimer: Convert to y2038 safe callbacks alarmtimer: Convert to y2038 safe callbacks posix-clock: Convert to y2038 safe callbacks time: Introduce timespec64_to_jiffies()/jiffies_to_timespec64() cputime: Introduce cputime_to_timespec64()/timespec64_to_cputime() posix-cpu-timers: Convert to y2038 safe callbacks k_clock: Remove y2038 unsafe callbacks arch/powerpc/include/asm/cputime.h | 6 +- arch/s390/include/asm/cputime.h | 8 +- drivers/char/mmtimer.c | 36 +++-- drivers/ptp/ptp_clock.c | 22 +-- include/asm-generic/cputime_jiffies.h | 10 +- include/asm-generic/cputime_nsecs.h | 6 +- include/linux/cputime.h | 16 ++ include/linux/jiffies.h | 21 ++- include/linux/lsm_hooks.h | 5 +- include/linux/posix-clock.h | 10 +- include/linux/posix-timers.h | 18 +-- include/linux/security.h | 20 ++- include/linux/time64.h | 35 +++++ include/linux/timekeeping.h | 25 +++- kernel/time/alarmtimer.c | 38 ++--- kernel/time/posix-clock.c | 20 +-- kernel/time/posix-cpu-timers.c | 84 ++++++----- kernel/time/posix-timers.c | 257 +++++++++++++++++++++------------ kernel/time/time.c | 19 +-- kernel/time/timekeeping.c | 6 +- security/commoncap.c | 2 +- security/security.c | 2 +- 22 files changed, 412 insertions(+), 254 deletions(-) -- 1.7.9.5

10 years, 7 months

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