table of contents
explain_setresuid_or_die(3) | Library Functions Manual | explain_setresuid_or_die(3) |
NAME¶
explain_setresuid_or_die - set r/e/s user ID and report errors
SYNOPSIS¶
#include <libexplain/setresuid.h>
void explain_setresuid_or_die(uid_t ruid, uid_t euid, uid_t suid);
int explain_setresuid_on_error(uid_t ruid, uid_t euid, uid_t suid);
DESCRIPTION¶
The explain_setresuid_or_die function is used to call the setresuid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setresuid(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_setresuid_on_error function is used to call the setresuid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setresuid(3) function, but still returns to the caller.
- ruid
- The ruid, exactly as to be passed to the setresuid(2) system call.
- euid
- The euid, exactly as to be passed to the setresuid(2) system call.
- suid
- The suid, exactly as to be passed to the setresuid(2) system call.
RETURN VALUE¶
The explain_setresuid_or_die function only returns on success, see setresuid(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_setresuid_on_error function always returns the value return by the wrapped setresuid(2) system call.
EXAMPLE¶
The explain_setresuid_or_die function is intended to be used in a fashion similar to the following example:
explain_setresuid_or_die(ruid, euid, suid);
SEE ALSO¶
- setresuid(2)
- set real, effective and saved user ID
- explain_setresuid(3)
- explain setresuid(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT¶
libexplain version 1.4
Copyright (C) 2012 Peter Miller