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Name

Synopsis

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

uid_t getuid(void);

uid_t geteuid(void);

gid_t getgid(void);

gid_t getegid(void);

MT-Level

Description

geteuid() returns the effective user ID of the calling process. The effective user ID gives the process various permissions during execution of ‘‘set-user-ID ’’ mode processes which use getuid () to determine the real user ID of the process that invoked them.

getgid() returns the real group ID of the calling process.

getegid() returns the effective group ID of the calling process.

See Also

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