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

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

SYNOPSIS #define _GNU_SOURCE #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 pro- cess, 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 appro- priately.

ERRORS As for access(2).

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

CONFORMING TO These functions are non-standard. 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 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at

2007-07-26 EUIDACCESS(3)