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| explain_setreuid_or_die(3) | FreeBSD Library Functions Manual | explain_setreuid_or_die(3) |
NAME
explain_setreuid_or_die - set the real and effective user ID and report errorsSYNOPSIS
#include <libexplain/setreuid.h>void explain_setreuid_or_die(uid_t ruid, uid_t euid);
int explain_setreuid_on_error(uid_t ruid, uid_t euid);
DESCRIPTION
The explain_setreuid_or_die function is used to call the setreuid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setreuid(3) function, and then the process terminates by calling exit(EXIT_FAILURE).The explain_setreuid_on_error function is used to call the setreuid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setreuid(3) function, but still returns to the caller.
- ruid
- The ruid, exactly as to be passed to the setreuid(2) system call.
- euid
- The euid, exactly as to be passed to the setreuid(2) system call.
RETURN VALUE
The explain_setreuid_or_die function only returns on success, see setreuid(2) for more information. On failure, prints an explanation and exits, it does not return.The explain_setreuid_on_error function always returns the value return by the wrapped setreuid(2) system call.
EXAMPLE
The explain_setreuid_or_die function is intended to be used in a fashion similar to the following example:explain_setreuid_or_die(ruid, euid);
SEE ALSO
- setreuid(2)
- set the real and effective user ID
- explain_setreuid(3)
- explain setreuid(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2012 Peter Miller
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