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#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) {
errno = EINVAL;
return -1;
}
if (name[0] == '\0') { /* POSIX requirement */
errno = ENOENT;
return -1;
}
if (fd != AT_FDCWD && name[0] != '/') { /* Not supported */
errno = EINVAL;
return -1;
}
if ((unsigned)flags > SHRT_MAX) {
errno = EINVAL;
return -1;
}
memset(&m, 0, sizeof(m));
m.m_vfs_utimens.len = strlen(name) + 1;
m.m_vfs_utimens.name = __UNCONST(name);
m.m_vfs_utimens.atime = tv[0].tv_sec;
m.m_vfs_utimens.mtime = tv[1].tv_sec;
m.m_vfs_utimens.ansec = tv[0].tv_nsec;
m.m_vfs_utimens.mnsec = tv[1].tv_nsec;
m.m_vfs_utimens.flags = flags;
return(_syscall(VFS_PROC_NR, VFS_UTIMENS, &m));
}
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