1c710c896e
Implement utimensat(2) which is an extension to futimesat(2) in that it
a) supports nano-second resolution for the timestamps
b) allows to selectively ignore the atime/mtime value
c) allows to selectively use the current time for either atime or mtime
d) supports changing the atime/mtime of a symlink itself along the lines
of the BSD lutimes(3) functions
For this change the internally used do_utimes() functions was changed to
accept a timespec time value and an additional flags parameter.
Additionally the sys_utime function was changed to match compat_sys_utime
which already use do_utimes instead of duplicating the work.
Also, the completely missing futimensat() functionality is added. We have
such a function in glibc but we have to resort to using /proc/self/fd/* which
not everybody likes (chroot etc).
Test application (the syscall number will need per-arch editing):
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <sys/time.h>
#include <stddef.h>
#include <syscall.h>
#define __NR_utimensat 280
#define UTIME_NOW ((1l << 30) - 1l)
#define UTIME_OMIT ((1l << 30) - 2l)
int
main(void)
{
int status = 0;
int fd = open("ttt", O_RDWR|O_CREAT|O_EXCL, 0666);
if (fd == -1)
error (1, errno, "failed to create test file \"ttt\"");
struct stat64 st1;
if (fstat64 (fd, &st1) != 0)
error (1, errno, "fstat failed");
struct timespec t[2];
t[0].tv_sec = 0;
t[0].tv_nsec = 0;
t[1].tv_sec = 0;
t[1].tv_nsec = 0;
if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
error (1, errno, "utimensat failed");
struct stat64 st2;
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0)
{
puts ("atim not reset to zero");
status = 1;
}
if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
{
puts ("mtim not reset to zero");
status = 1;
}
if (status != 0)
goto out;
t[0] = st1.st_atim;
t[1].tv_sec = 0;
t[1].tv_nsec = UTIME_OMIT;
if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
error (1, errno, "utimensat failed");
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
if (st2.st_atim.tv_sec != st1.st_atim.tv_sec
|| st2.st_atim.tv_nsec != st1.st_atim.tv_nsec)
{
puts ("atim not set");
status = 1;
}
if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
{
puts ("mtim changed from zero");
status = 1;
}
if (status != 0)
goto out;
t[0].tv_sec = 0;
t[0].tv_nsec = UTIME_OMIT;
t[1] = st1.st_mtim;
if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
error (1, errno, "utimensat failed");
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
if (st2.st_atim.tv_sec != st1.st_atim.tv_sec
|| st2.st_atim.tv_nsec != st1.st_atim.tv_nsec)
{
puts ("mtim changed from original time");
status = 1;
}
if (st2.st_mtim.tv_sec != st1.st_mtim.tv_sec
|| st2.st_mtim.tv_nsec != st1.st_mtim.tv_nsec)
{
puts ("mtim not set");
status = 1;
}
if (status != 0)
goto out;
sleep (2);
t[0].tv_sec = 0;
t[0].tv_nsec = UTIME_NOW;
t[1].tv_sec = 0;
t[1].tv_nsec = UTIME_NOW;
if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
error (1, errno, "utimensat failed");
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
struct timeval tv;
gettimeofday(&tv,NULL);
if (st2.st_atim.tv_sec <= st1.st_atim.tv_sec
|| st2.st_atim.tv_sec > tv.tv_sec)
{
puts ("atim not set to NOW");
status = 1;
}
if (st2.st_mtim.tv_sec <= st1.st_mtim.tv_sec
|| st2.st_mtim.tv_sec > tv.tv_sec)
{
puts ("mtim not set to NOW");
status = 1;
}
if (symlink ("ttt", "tttsym") != 0)
error (1, errno, "cannot create symlink");
t[0].tv_sec = 0;
t[0].tv_nsec = 0;
t[1].tv_sec = 0;
t[1].tv_nsec = 0;
if (syscall(__NR_utimensat, AT_FDCWD, "tttsym", t, AT_SYMLINK_NOFOLLOW) != 0)
error (1, errno, "utimensat failed");
if (lstat64 ("tttsym", &st2) != 0)
error (1, errno, "lstat failed");
if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0)
{
puts ("symlink atim not reset to zero");
status = 1;
}
if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
{
puts ("symlink mtim not reset to zero");
status = 1;
}
if (status != 0)
goto out;
t[0].tv_sec = 1;
t[0].tv_nsec = 0;
t[1].tv_sec = 1;
t[1].tv_nsec = 0;
if (syscall(__NR_utimensat, fd, NULL, t, 0) != 0)
error (1, errno, "utimensat failed");
if (fstat64 (fd, &st2) != 0)
error (1, errno, "fstat failed");
if (st2.st_atim.tv_sec != 1 || st2.st_atim.tv_nsec != 0)
{
puts ("atim not reset to one");
status = 1;
}
if (st2.st_mtim.tv_sec != 1 || st2.st_mtim.tv_nsec != 0)
{
puts ("mtim not reset to one");
status = 1;
}
if (status == 0)
puts ("all OK");
out:
close (fd);
unlink ("ttt");
unlink ("tttsym");
return status;
}
[akpm@linux-foundation.org: add missing i386 syscall table entry]
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Cc: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
323 lines
7.7 KiB
ArmAsm
323 lines
7.7 KiB
ArmAsm
ENTRY(sys_call_table)
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.long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
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.long sys_exit
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.long sys_fork
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.long sys_read
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.long sys_write
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.long sys_open /* 5 */
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.long sys_close
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.long sys_waitpid
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.long sys_creat
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.long sys_link
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.long sys_unlink /* 10 */
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.long sys_execve
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.long sys_chdir
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.long sys_time
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.long sys_mknod
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.long sys_chmod /* 15 */
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.long sys_lchown16
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.long sys_ni_syscall /* old break syscall holder */
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.long sys_stat
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.long sys_lseek
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.long sys_getpid /* 20 */
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.long sys_mount
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.long sys_oldumount
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.long sys_setuid16
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.long sys_getuid16
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.long sys_stime /* 25 */
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.long sys_ptrace
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.long sys_alarm
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.long sys_fstat
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.long sys_pause
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.long sys_utime /* 30 */
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.long sys_ni_syscall /* old stty syscall holder */
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.long sys_ni_syscall /* old gtty syscall holder */
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.long sys_access
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.long sys_nice
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.long sys_ni_syscall /* 35 - old ftime syscall holder */
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.long sys_sync
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.long sys_kill
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.long sys_rename
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.long sys_mkdir
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.long sys_rmdir /* 40 */
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.long sys_dup
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.long sys_pipe
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.long sys_times
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.long sys_ni_syscall /* old prof syscall holder */
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.long sys_brk /* 45 */
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.long sys_setgid16
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.long sys_getgid16
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.long sys_signal
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.long sys_geteuid16
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.long sys_getegid16 /* 50 */
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.long sys_acct
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.long sys_umount /* recycled never used phys() */
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.long sys_ni_syscall /* old lock syscall holder */
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.long sys_ioctl
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.long sys_fcntl /* 55 */
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.long sys_ni_syscall /* old mpx syscall holder */
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.long sys_setpgid
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.long sys_ni_syscall /* old ulimit syscall holder */
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.long sys_olduname
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.long sys_umask /* 60 */
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.long sys_chroot
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.long sys_ustat
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.long sys_dup2
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.long sys_getppid
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.long sys_getpgrp /* 65 */
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.long sys_setsid
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.long sys_sigaction
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.long sys_sgetmask
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.long sys_ssetmask
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.long sys_setreuid16 /* 70 */
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.long sys_setregid16
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.long sys_sigsuspend
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.long sys_sigpending
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.long sys_sethostname
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.long sys_setrlimit /* 75 */
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.long sys_old_getrlimit
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.long sys_getrusage
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.long sys_gettimeofday
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.long sys_settimeofday
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.long sys_getgroups16 /* 80 */
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.long sys_setgroups16
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.long old_select
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.long sys_symlink
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.long sys_lstat
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.long sys_readlink /* 85 */
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.long sys_uselib
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.long sys_swapon
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.long sys_reboot
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.long old_readdir
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.long old_mmap /* 90 */
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.long sys_munmap
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.long sys_truncate
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.long sys_ftruncate
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.long sys_fchmod
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.long sys_fchown16 /* 95 */
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.long sys_getpriority
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.long sys_setpriority
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.long sys_ni_syscall /* old profil syscall holder */
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.long sys_statfs
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.long sys_fstatfs /* 100 */
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.long sys_ioperm
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.long sys_socketcall
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.long sys_syslog
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.long sys_setitimer
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.long sys_getitimer /* 105 */
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.long sys_newstat
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.long sys_newlstat
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.long sys_newfstat
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.long sys_uname
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.long sys_iopl /* 110 */
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.long sys_vhangup
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.long sys_ni_syscall /* old "idle" system call */
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.long sys_vm86old
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.long sys_wait4
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.long sys_swapoff /* 115 */
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.long sys_sysinfo
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.long sys_ipc
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.long sys_fsync
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.long sys_sigreturn
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.long sys_clone /* 120 */
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.long sys_setdomainname
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.long sys_newuname
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.long sys_modify_ldt
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.long sys_adjtimex
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.long sys_mprotect /* 125 */
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.long sys_sigprocmask
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.long sys_ni_syscall /* old "create_module" */
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.long sys_init_module
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.long sys_delete_module
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.long sys_ni_syscall /* 130: old "get_kernel_syms" */
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.long sys_quotactl
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.long sys_getpgid
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.long sys_fchdir
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.long sys_bdflush
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.long sys_sysfs /* 135 */
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.long sys_personality
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.long sys_ni_syscall /* reserved for afs_syscall */
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.long sys_setfsuid16
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.long sys_setfsgid16
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.long sys_llseek /* 140 */
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.long sys_getdents
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.long sys_select
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.long sys_flock
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.long sys_msync
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.long sys_readv /* 145 */
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.long sys_writev
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.long sys_getsid
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.long sys_fdatasync
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.long sys_sysctl
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.long sys_mlock /* 150 */
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.long sys_munlock
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.long sys_mlockall
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.long sys_munlockall
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.long sys_sched_setparam
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.long sys_sched_getparam /* 155 */
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.long sys_sched_setscheduler
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.long sys_sched_getscheduler
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.long sys_sched_yield
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.long sys_sched_get_priority_max
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.long sys_sched_get_priority_min /* 160 */
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.long sys_sched_rr_get_interval
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.long sys_nanosleep
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.long sys_mremap
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.long sys_setresuid16
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.long sys_getresuid16 /* 165 */
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.long sys_vm86
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.long sys_ni_syscall /* Old sys_query_module */
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.long sys_poll
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.long sys_nfsservctl
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.long sys_setresgid16 /* 170 */
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.long sys_getresgid16
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.long sys_prctl
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.long sys_rt_sigreturn
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.long sys_rt_sigaction
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.long sys_rt_sigprocmask /* 175 */
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.long sys_rt_sigpending
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.long sys_rt_sigtimedwait
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.long sys_rt_sigqueueinfo
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.long sys_rt_sigsuspend
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.long sys_pread64 /* 180 */
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.long sys_pwrite64
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.long sys_chown16
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.long sys_getcwd
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.long sys_capget
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.long sys_capset /* 185 */
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.long sys_sigaltstack
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.long sys_sendfile
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.long sys_ni_syscall /* reserved for streams1 */
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.long sys_ni_syscall /* reserved for streams2 */
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.long sys_vfork /* 190 */
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.long sys_getrlimit
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.long sys_mmap2
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.long sys_truncate64
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.long sys_ftruncate64
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.long sys_stat64 /* 195 */
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.long sys_lstat64
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.long sys_fstat64
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.long sys_lchown
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.long sys_getuid
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.long sys_getgid /* 200 */
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.long sys_geteuid
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.long sys_getegid
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.long sys_setreuid
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.long sys_setregid
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.long sys_getgroups /* 205 */
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.long sys_setgroups
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.long sys_fchown
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.long sys_setresuid
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.long sys_getresuid
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.long sys_setresgid /* 210 */
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.long sys_getresgid
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.long sys_chown
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.long sys_setuid
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.long sys_setgid
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.long sys_setfsuid /* 215 */
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.long sys_setfsgid
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.long sys_pivot_root
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.long sys_mincore
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.long sys_madvise
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.long sys_getdents64 /* 220 */
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.long sys_fcntl64
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.long sys_ni_syscall /* reserved for TUX */
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.long sys_ni_syscall
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.long sys_gettid
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.long sys_readahead /* 225 */
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.long sys_setxattr
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.long sys_lsetxattr
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.long sys_fsetxattr
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.long sys_getxattr
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.long sys_lgetxattr /* 230 */
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.long sys_fgetxattr
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.long sys_listxattr
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.long sys_llistxattr
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.long sys_flistxattr
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.long sys_removexattr /* 235 */
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.long sys_lremovexattr
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.long sys_fremovexattr
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.long sys_tkill
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.long sys_sendfile64
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.long sys_futex /* 240 */
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.long sys_sched_setaffinity
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.long sys_sched_getaffinity
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.long sys_set_thread_area
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.long sys_get_thread_area
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.long sys_io_setup /* 245 */
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.long sys_io_destroy
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.long sys_io_getevents
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.long sys_io_submit
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.long sys_io_cancel
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.long sys_fadvise64 /* 250 */
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.long sys_ni_syscall
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.long sys_exit_group
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.long sys_lookup_dcookie
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.long sys_epoll_create
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.long sys_epoll_ctl /* 255 */
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.long sys_epoll_wait
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.long sys_remap_file_pages
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.long sys_set_tid_address
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.long sys_timer_create
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.long sys_timer_settime /* 260 */
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.long sys_timer_gettime
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.long sys_timer_getoverrun
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.long sys_timer_delete
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.long sys_clock_settime
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.long sys_clock_gettime /* 265 */
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.long sys_clock_getres
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.long sys_clock_nanosleep
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.long sys_statfs64
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.long sys_fstatfs64
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.long sys_tgkill /* 270 */
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.long sys_utimes
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.long sys_fadvise64_64
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.long sys_ni_syscall /* sys_vserver */
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.long sys_mbind
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.long sys_get_mempolicy
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.long sys_set_mempolicy
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.long sys_mq_open
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.long sys_mq_unlink
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.long sys_mq_timedsend
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.long sys_mq_timedreceive /* 280 */
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.long sys_mq_notify
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.long sys_mq_getsetattr
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.long sys_kexec_load
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.long sys_waitid
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.long sys_ni_syscall /* 285 */ /* available */
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.long sys_add_key
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.long sys_request_key
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.long sys_keyctl
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.long sys_ioprio_set
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.long sys_ioprio_get /* 290 */
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.long sys_inotify_init
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.long sys_inotify_add_watch
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.long sys_inotify_rm_watch
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.long sys_migrate_pages
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.long sys_openat /* 295 */
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.long sys_mkdirat
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.long sys_mknodat
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.long sys_fchownat
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.long sys_futimesat
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.long sys_fstatat64 /* 300 */
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.long sys_unlinkat
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.long sys_renameat
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.long sys_linkat
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.long sys_symlinkat
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.long sys_readlinkat /* 305 */
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.long sys_fchmodat
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.long sys_faccessat
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.long sys_pselect6
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.long sys_ppoll
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.long sys_unshare /* 310 */
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.long sys_set_robust_list
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.long sys_get_robust_list
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.long sys_splice
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.long sys_sync_file_range
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.long sys_tee /* 315 */
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.long sys_vmsplice
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.long sys_move_pages
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.long sys_getcpu
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.long sys_epoll_pwait
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.long sys_utimensat /* 320 */
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