RTEMS 4.5.0 On-Line Library

Files and Directories Manager chmod - Changes file mode.

RTEMS POSIX API User's Guide

4.4.24: chmod - Changes file mode.

CALLING SEQUENCE:

#include <sys/types.h>
#include <sys/stat.h>

int chmod(
  const char *path,
  mode_t      mode
);

STATUS CODES:

EACCES: Search permission is denied for a directory in a file's path prefix
ENAMETOOLONG: Length of a filename string exceeds PATH_MAX and _POSIX_NO_TRUNC is in effect.
ENOENT: A file or directory does not exist.
ENOTDIR: A component of the specified pathname was not a directory when a directory was expected.
EPERM: Operation is not permitted. Process does not have the appropriate priviledges or permissions to perform the requested operations.
EROFS: Read-only file system.

DESCRIPTION:

Set the file permission bits, the set user ID bit, and the set group ID bit for the file named by path to mode. If the effective user ID does not match the owner of the file and the calling process does not have the appropriate privileges, chmod() returns -1 and sets errno to EPERM.

NOTES:

NONE

RTEMS POSIX API User's Guide