seteuid - set effective user ID
int seteuid(uid_t uid);
If uid is equal to the real user ID or the saved set-user-ID, or if the process has appropriate privileges, seteuid() shall set the effective user ID of the calling process to uid; the real user ID and saved set-user-ID shall remain unchanged.
The seteuid() function shall not affect the supplementary group list in any way.
Upon successful completion, 0 shall be returned; otherwise, -1 shall be returned and errno set to indicate the error.
The seteuid() function shall fail if:
- The value of the uid argument is invalid and is not supported by the implementation.
- The process does not have appropriate privileges and uid does not match the real group ID or the saved set-group-ID.
Refer to the RATIONALE section in setuid() .
exec() , getegid() , geteuid() , getgid() , getuid() , setegid() , setgid() , setregid() , setreuid() , setuid() , the Base Definitions volume of IEEE Std 1003.1-2001, <sys/types.h>, <unistd.h>
First released in Issue 6. Derived from the IEEE P1003.1a draft standard.