SYSCALL_DEFINE3(futimesat, int, dfd, const char __user *, filename,
struct timeval __user *, utimes)
{
struct timeval times[2];
struct timespec tstimes[2];
if (utimes) {
if (copy_from_user(×, utimes, sizeof(times)))
return -EFAULT;
/* This test is needed to catch all invalid values. If we
would test only in do_utimes we would miss those invalid
values truncated by the multiplication with 1000. Note
that we also catch UTIME_{NOW,OMIT} here which are only
valid for utimensat. */
if (times[0].tv_usec >= 1000000 || times[0].tv_usec < 0 ||
times[1].tv_usec >= 1000000 || times[1].tv_usec < 0)
return -EINVAL;
tstimes[0].tv_sec = times[0].tv_sec;
tstimes[0].tv_nsec = 1000 * times[0].tv_usec;
tstimes[1].tv_sec = times[1].tv_sec;
tstimes[1].tv_nsec = 1000 * times[1].tv_usec;
}
return do_utimes(dfd, filename, utimes ? tstimes : NULL, 0);
}
asmlinkage long sys_futimesat(int dfd, char __user *filename, struct timeval __user *utimes)
{
struct timeval times[2];
if (utimes && copy_from_user(×, utimes, sizeof(times)))
return -EFAULT;
return do_utimes(dfd, filename, utimes ? times : NULL);
}
/* This returns 0 for success, 1 for a symlink if symlink time-setting
* is not possible, or -1 for any other error. */
int set_modtime(const char *fname, time_t modtime, uint32 mod_nsec, mode_t mode)
{
static int switch_step = 0;
if (DEBUG_GTE(TIME, 1)) {
rprintf(FINFO, "set modtime of %s to (%ld) %s",
fname, (long)modtime,
asctime(localtime(&modtime)));
}
switch (switch_step) {
#ifdef HAVE_UTIMENSAT
#include "case_N.h"
if (do_utimensat(fname, modtime, mod_nsec) == 0)
break;
if (errno != ENOSYS)
return -1;
switch_step++;
/* FALLTHROUGH */
#endif
#ifdef HAVE_LUTIMES
#include "case_N.h"
if (do_lutimes(fname, modtime, mod_nsec) == 0)
break;
if (errno != ENOSYS)
return -1;
switch_step++;
/* FALLTHROUGH */
#endif
#include "case_N.h"
switch_step++;
if (preserve_times & PRESERVE_LINK_TIMES) {
preserve_times &= ~PRESERVE_LINK_TIMES;
if (S_ISLNK(mode))
return 1;
}
/* FALLTHROUGH */
#include "case_N.h"
#ifdef HAVE_UTIMES
if (do_utimes(fname, modtime, mod_nsec) == 0)
break;
#else
if (do_utime(fname, modtime, mod_nsec) == 0)
break;
#endif
return -1;
}
return 0;
}
/* If times==NULL, set access and modification to current time,
* must be owner or have write permission.
* Else, update from *times, must be owner or super user.
*/
SYSCALL_DEFINE2(utime, char __user *, filename, struct utimbuf __user *, times)
{
struct timespec tv[2];
if (times) {
if (get_user(tv[0].tv_sec, ×->actime) ||
get_user(tv[1].tv_sec, ×->modtime))
return -EFAULT;
tv[0].tv_nsec = 0;
tv[1].tv_nsec = 0;
}
return do_utimes(AT_FDCWD, filename, times ? tv : NULL, 0);
}
/* If times==NULL, set access and modification to current time,
* must be owner or have write permission.
* Else, update from *times, must be owner or super user.
*/
asmlinkage long sys_utime(char __user *filename, struct utimbuf __user *times)
{
struct timespec tv[2];
if (times) {
if (get_user(tv[0].tv_sec, ×->actime) ||
get_user(tv[1].tv_sec, ×->modtime))
return -EFAULT;
tv[0].tv_nsec = 0;
tv[1].tv_nsec = 0;
}
return do_utimes(AT_FDCWD, filename, times ? tv : NULL, 0);
}
asmlinkage long sys32_utimes(char __user *filename,
struct compat_timeval __user *tvs)
{
struct timeval ktvs[2];
if (tvs) {
if (get_tv32(&ktvs[0], tvs) ||
get_tv32(&ktvs[1], 1+tvs))
return -EFAULT;
}
return do_utimes(AT_FDCWD, filename, (tvs ? &ktvs[0] : NULL));
}
asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filename, struct compat_timespec __user *t, int flags)
{
struct timespec tv[2];
if (t) {
if (get_compat_timespec(&tv[0], &t[0]) ||
get_compat_timespec(&tv[1], &t[1]))
return -EFAULT;
if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
return 0;
}
return do_utimes(dfd, filename, t ? tv : NULL, flags);
}
COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filename, struct compat_timespec __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]))
return -EFAULT;
if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
return 0;
}
return do_utimes(dfd, filename, t ? tv : NULL, flags);
}
/*
* Not all architectures have sys_utime, so implement this in terms
* of sys_utimes.
*/
COMPAT_SYSCALL_DEFINE2(utime, const char __user *, filename,
struct compat_utimbuf __user *, t)
{
struct timespec64 tv[2];
if (t) {
if (get_user(tv[0].tv_sec, &t->actime) ||
get_user(tv[1].tv_sec, &t->modtime))
return -EFAULT;
tv[0].tv_nsec = 0;
tv[1].tv_nsec = 0;
}
return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0);
}
SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename,
struct timespec __user *, utimes, int, flags)
{
struct timespec tstimes[2];
if (utimes) {
if (copy_from_user(&tstimes, utimes, sizeof(tstimes)))
return -EFAULT;
/* Nothing to do, we must not even check the path. */
if (tstimes[0].tv_nsec == UTIME_OMIT &&
tstimes[1].tv_nsec == UTIME_OMIT)
return 0;
}
return do_utimes(dfd, filename, utimes ? tstimes : NULL, flags);
}
asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filename, struct compat_timeval __user *t)
{
struct timespec tv[2];
if (t) {
if (get_user(tv[0].tv_sec, &t[0].tv_sec) ||
get_user(tv[0].tv_nsec, &t[0].tv_usec) ||
get_user(tv[1].tv_sec, &t[1].tv_sec) ||
get_user(tv[1].tv_nsec, &t[1].tv_usec))
return -EFAULT;
if (tv[0].tv_nsec >= 1000000 || tv[0].tv_nsec < 0 ||
tv[1].tv_nsec >= 1000000 || tv[1].tv_nsec < 0)
return -EINVAL;
tv[0].tv_nsec *= 1000;
tv[1].tv_nsec *= 1000;
}
return do_utimes(dfd, filename, t ? tv : NULL, 0);
}
COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filename, struct compat_timeval __user *, t)
{
struct timespec tv[2];
if (t) {
if (get_user(tv[0].tv_sec, &t[0].tv_sec) ||
get_user(tv[0].tv_nsec, &t[0].tv_usec) ||
get_user(tv[1].tv_sec, &t[1].tv_sec) ||
get_user(tv[1].tv_nsec, &t[1].tv_usec))
return -EFAULT;
if (tv[0].tv_nsec >= 1000000 || tv[0].tv_nsec < 0 ||
tv[1].tv_nsec >= 1000000 || tv[1].tv_nsec < 0)
return -EINVAL;
tv[0].tv_nsec *= 1000;
tv[1].tv_nsec *= 1000;
}
return do_utimes(dfd, filename, t ? tv : NULL, 0);
}
SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename,
struct __kernel_timespec __user *, utimes, int, flags)
{
struct timespec64 tstimes[2];
if (utimes) {
if ((get_timespec64(&tstimes[0], &utimes[0]) ||
get_timespec64(&tstimes[1], &utimes[1])))
return -EFAULT;
/* Nothing to do, we must not even check the path. */
if (tstimes[0].tv_nsec == UTIME_OMIT &&
tstimes[1].tv_nsec == UTIME_OMIT)
return 0;
}
return do_utimes(dfd, filename, utimes ? tstimes : NULL, flags);
}
asmlinkage long sys32_utimes(char __user *filename,
struct compat_timeval __user *tvs)
{
struct timespec tv[2];
if (tvs) {
struct timeval ktvs[2];
if (get_tv32(&ktvs[0], tvs) ||
get_tv32(&ktvs[1], 1+tvs))
return -EFAULT;
if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
return -EINVAL;
tv[0].tv_sec = ktvs[0].tv_sec;
tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
tv[1].tv_sec = ktvs[1].tv_sec;
tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
}
return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
}
asmlinkage long sys_utimensat(int dfd, char __user *filename, struct timespec __user *utimes, int flags)
{
struct timespec tstimes[2];
if (utimes) {
if (copy_from_user(&tstimes, utimes, sizeof(tstimes)))
return -EFAULT;
if ((tstimes[0].tv_nsec == UTIME_OMIT ||
tstimes[0].tv_nsec == UTIME_NOW) &&
tstimes[0].tv_sec != 0)
return -EINVAL;
if ((tstimes[1].tv_nsec == UTIME_OMIT ||
tstimes[1].tv_nsec == UTIME_NOW) &&
tstimes[1].tv_sec != 0)
return -EINVAL;
/* Nothing to do, we must not even check the path. */
if (tstimes[0].tv_nsec == UTIME_OMIT &&
tstimes[1].tv_nsec == UTIME_OMIT)
return 0;
}
return do_utimes(dfd, filename, utimes ? tstimes : NULL, flags);
}
