Re: [RESEND PATCH 2/6] ipc: mqueue: Replace timespec with timespec64

struct timespec is not y2038 safe. Replace all uses of timespec by y2038 safe struct timespec64. Even though timespec is used here to represent timeouts, replace these with timespec64 so that it facilitates in verification by creating a y2038 safe kernel image that is free of timespec. The syscall interfaces themselves are not changed as part of the patch. They will be part of a different series. Signed-off-by: Deepa Dinamani <deepa.kernel(a)gmail.com&gt; Cc: Paul Moore <paul(a)paul-moore.com&gt; Cc: Richard Guy Briggs <rgb(a)redhat.com&gt;

--- include/linux/audit.h | 6 +++--- ipc/mqueue.c | 28 ++++++++++++++-------------- kernel/audit.h | 2 +- kernel/auditsc.c | 12 ++++++------ 4 files changed, 24 insertions(+), 24 deletions(-) diff --git a/include/linux/audit.h b/include/linux/audit.h index 2150bdccfbab..74d4d4e8e3db 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -351,7 +351,7 @@ extern int __audit_socketcall(int nargs, unsigned long *args); extern int __audit_sockaddr(int len, void *addr); extern void __audit_fd_pair(int fd1, int fd2); extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr); -extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout); +extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec64 *abs_timeout); extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification); extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat); extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm, @@ -412,7 +412,7 @@ static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr) if (unlikely(!audit_dummy_context())) __audit_mq_open(oflag, mode, attr); } -static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout) +static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec64 *abs_timeout) { if (unlikely(!audit_dummy_context())) __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout); @@ -549,7 +549,7 @@ static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr) { } static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, - const struct timespec *abs_timeout) + const struct timespec64 *abs_timeout) { } static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification) diff --git a/ipc/mqueue.c b/ipc/mqueue.c index c9ff943f19ab..5be1346a9167 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -668,11 +668,11 @@ static void __do_notify(struct mqueue_inode_info *info) } static int prepare_timeout(const struct timespec __user *u_abs_timeout, - struct timespec *ts) + struct timespec64 *ts) { - if (copy_from_user(ts, u_abs_timeout, sizeof(struct timespec))) + if (get_timespec64(ts, u_abs_timeout)) return -EFAULT; - if (!timespec_valid(ts)) + if (!timespec64_valid(ts)) return -EINVAL; return 0; } @@ -962,7 +962,7 @@ static inline void pipelined_receive(struct wake_q_head *wake_q, static int do_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr, size_t msg_len, unsigned int msg_prio, - struct timespec *ts) + struct timespec64 *ts) { struct fd f; struct inode *inode; @@ -979,7 +979,7 @@ static int do_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr, return -EINVAL; if (ts) { - expires = timespec_to_ktime(*ts); + expires = timespec64_to_ktime(*ts); timeout = &expires; } @@ -1080,7 +1080,7 @@ static int do_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr, static int do_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr, size_t msg_len, unsigned int __user *u_msg_prio, - struct timespec *ts) + struct timespec64 *ts) { ssize_t ret; struct msg_msg *msg_ptr; @@ -1092,7 +1092,7 @@ static int do_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr, struct posix_msg_tree_node *new_leaf = NULL; if (ts) { - expires = timespec_to_ktime(*ts); + expires = timespec64_to_ktime(*ts); timeout = &expires; } @@ -1184,7 +1184,7 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr, size_t, msg_len, unsigned int, msg_prio, const struct timespec __user *, u_abs_timeout) { - struct timespec ts, *p = NULL; + struct timespec64 ts, *p = NULL; if (u_abs_timeout) { int res = prepare_timeout(u_abs_timeout, &ts); if (res) @@ -1198,7 +1198,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr, size_t, msg_len, unsigned int __user *, u_msg_prio, const struct timespec __user *, u_abs_timeout) { - struct timespec ts, *p = NULL; + struct timespec64 ts, *p = NULL; if (u_abs_timeout) { int res = prepare_timeout(u_abs_timeout, &ts); if (res) @@ -1473,11 +1473,11 @@ COMPAT_SYSCALL_DEFINE4(mq_open, const char __user *, u_name, } static int compat_prepare_timeout(const struct compat_timespec __user *p, - struct timespec *ts) + struct timespec64 *ts) { - if (compat_get_timespec(ts, p)) + if (compat_get_timespec64(ts, p)) return -EFAULT; - if (!timespec_valid(ts)) + if (!timespec64_valid(ts)) return -EINVAL; return 0; } @@ -1487,7 +1487,7 @@ COMPAT_SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, compat_size_t, msg_len, unsigned int, msg_prio, const struct compat_timespec __user *, u_abs_timeout) { - struct timespec ts, *p = NULL; + struct timespec64 ts, *p = NULL; if (u_abs_timeout) { int res = compat_prepare_timeout(u_abs_timeout, &ts); if (res) @@ -1502,7 +1502,7 @@ COMPAT_SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, compat_size_t, msg_len, unsigned int __user *, u_msg_prio, const struct compat_timespec __user *, u_abs_timeout) { - struct timespec ts, *p = NULL; + struct timespec64 ts, *p = NULL; if (u_abs_timeout) { int res = compat_prepare_timeout(u_abs_timeout, &ts); if (res) diff --git a/kernel/audit.h b/kernel/audit.h index b331d9b83f63..9b110ae17ee3 100644 --- a/kernel/audit.h +++ b/kernel/audit.h @@ -182,7 +182,7 @@ struct audit_context { mqd_t mqdes; size_t msg_len; unsigned int msg_prio; - struct timespec abs_timeout; + struct timespec64 abs_timeout; } mq_sendrecv; struct { int oflag; diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 3260ba2312a9..d0870f8e3656 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -1235,11 +1235,11 @@ static void show_special(struct audit_context *context, int *call_panic) case AUDIT_MQ_SENDRECV: audit_log_format(ab, "mqdes=%d msg_len=%zd msg_prio=%u " - "abs_timeout_sec=%ld abs_timeout_nsec=%ld", + "abs_timeout_sec=%lld abs_timeout_nsec=%ld", context->mq_sendrecv.mqdes, context->mq_sendrecv.msg_len, context->mq_sendrecv.msg_prio, - context->mq_sendrecv.abs_timeout.tv_sec, + (long long) context->mq_sendrecv.abs_timeout.tv_sec, context->mq_sendrecv.abs_timeout.tv_nsec); break; case AUDIT_MQ_NOTIFY: @@ -2083,15 +2083,15 @@ void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr) * */ void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, - const struct timespec *abs_timeout) + const struct timespec64 *abs_timeout) { struct audit_context *context = current->audit_context; - struct timespec *p = &context->mq_sendrecv.abs_timeout; + struct timespec64 *p = &context->mq_sendrecv.abs_timeout; if (abs_timeout) - memcpy(p, abs_timeout, sizeof(struct timespec)); + memcpy(p, abs_timeout, sizeof(struct timespec64)); else - memset(p, 0, sizeof(struct timespec)); + memset(p, 0, sizeof(struct timespec64)); context->mq_sendrecv.mqdes = mqdes; context->mq_sendrecv.msg_len = msg_len; -- 2.11.0