44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
|
#include <sys/cdefs.h>
|
||
|
|
#include "namespace.h"
|
||
|
|
#include <lib.h>
|
||
|
|
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <limits.h>
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
/* Implement a very large but not complete subset of the utimensat()
|
||
|
|
* Posix:2008/XOpen-7 function.
|
||
|
|
* Are handled the following cases:
|
||
|
|
* . utimensat(AT_FDCWD, "/some/absolute/path", , )
|
||
|
|
* . utimensat(AT_FDCWD, "some/path", , )
|
||
|
|
* . utimensat(fd, "/some/absolute/path", , ) although fd is useless here
|
||
|
|
* Are not handled the following cases:
|
||
|
|
* . utimensat(fd, "some/path", , ) path to a file relative to some open fd
|
||
|
|
*/
|
||
|
|
int utimensat(int fd, const char *name, const struct timespec tv[2],
|
||
|
|
int flags)
|
||
|
|
{
|
||
|
|
message m;
|
||
|
|
static const struct timespec now[2] = { {0, UTIME_NOW}, {0, UTIME_NOW} };
|
||
|
|
|
||
|
|
if (tv == NULL) tv = now;
|
||
|
|
|
||
|
|
if (name == NULL) return EINVAL;
|
||
|
|
if (name[0] == '\0') return ENOENT; /* POSIX requirement */
|
||
|
|
if (fd != AT_FDCWD && name[0] != '/') return EINVAL; /* Not supported */
|
||
|
|
m.m2_i1 = strlen(name) + 1;
|
||
|
|
m.m2_p1 = (char *) __UNCONST(name);
|
||
|
|
m.m2_l1 = tv[0].tv_sec;
|
||
|
|
m.m2_l2 = tv[1].tv_sec;
|
||
|
|
m.m2_i2 = tv[0].tv_nsec;
|
||
|
|
m.m2_i3 = tv[1].tv_nsec;
|
||
|
|
if ((unsigned)flags > SHRT_MAX)
|
||
|
|
return EINVAL;
|
||
|
|
else
|
||
|
|
m.m2_s1 = flags;
|
||
|
|
|
||
|
|
return(_syscall(VFS_PROC_NR, UTIMENS, &m));
|
||
|
|
}
|