linux man page for eaccess

EUIDACCESS(3)						     Linux Programmer's Manual						     EUIDACCESS(3)

NAME
       euidaccess, eaccess - check effective user's permissions for a file

SYNOPSIS
       #define _GNU_SOURCE	       /* See feature_test_macros(7) */
       #include <unistd.h>

       int euidaccess(const char *pathname, int mode);
       int eaccess(const char *pathname, int mode);

DESCRIPTION
       Like access(2), euidaccess() checks permissions and existence of the file identified by its argument pathname.  However, whereas access(2),
       performs checks using the real user and group identifiers of the process, euidaccess() uses the effective identifiers.

       mode is a mask consisting of one or more of R_OK, W_OK, X_OK and F_OK, with the same meanings as for access(2).

       eaccess() is a synonym for euidaccess(), provided for compatibility with some other systems.

RETURN VALUE
       On success (all requested permissions granted), zero is returned.  On error (at least one bit in  mode  asked  for  a  permission  that	is
       denied, or some other error occurred), -1 is returned, and errno is set appropriately.

ERRORS
       As for access(2).

VERSIONS
       The eaccess() function was added to glibc in version 2.4.

CONFORMING TO
       These functions are nonstandard.  Some other systems have an eaccess() function.

SEE ALSO
       access(2), chmod(2), chown(2), faccessat(2), open(2), setgid(2), setuid(2), stat(2), credentials(7), path_resolution(7)

COLOPHON
       This  page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

								    2010-09-10							     EUIDACCESS(3)