* Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*/
#include <errno.h>
#include <unistd.h>
#include <NodeMonitor.h>
#include <errno_private.h>
#include <syscalls.h>
#include <syscall_utils.h>
static int
common_chown(int fd, const char* path, bool followLinks, uid_t owner,
gid_t group)
{
struct stat stat;
status_t status;
int mask = 0;
if (owner != (uid_t)-1) {
stat.st_uid = owner;
mask |= B_STAT_UID;
}
if (group != (gid_t)-1) {
stat.st_gid = group;
mask |= B_STAT_GID;
}
status = _kern_write_stat(fd, path, followLinks, &stat,
sizeof(struct stat), mask);
RETURN_AND_SET_ERRNO(status);
}
int
chown(const char *path, uid_t owner, gid_t group)
{
return common_chown(AT_FDCWD, path, true, owner, group);
}
int
lchown(const char *path, uid_t owner, gid_t group)
{
return common_chown(AT_FDCWD, path, false, owner, group);
}
int
fchown(int fd, uid_t owner, gid_t group)
{
return common_chown(fd, NULL, false, owner, group);
}
int
fchownat(int fd, const char* path, uid_t owner, gid_t group, int flag)
{
return common_chown(fd, path, (flag & AT_SYMLINK_NOFOLLOW) == 0, owner,
group);
}
