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| explain_shmat_or_die(3) | FreeBSD Library Functions Manual | explain_shmat_or_die(3) |
NAME
explain_shmat_or_die - shared memory attach and report errorsSYNOPSIS
#include <libexplain/shmat.h>void *explain_shmat_or_die(int shmid, const void *shmaddr, int
shmflg);
void *explain_shmat_on_error(int shmid, const void *shmaddr, int shmflg);
DESCRIPTION
The explain_shmat_or_die function is used to call the shmat(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_shmat(3) function, and then the process terminates by calling exit(EXIT_FAILURE).The explain_shmat_on_error function is used to call the shmat(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_shmat(3) function, but still returns to the caller.
- shmid
- The shmid, exactly as to be passed to the shmat(2) system call.
- shmaddr
- The shmaddr, exactly as to be passed to the shmat(2) system call.
- shmflg
- The shmflg, exactly as to be passed to the shmat(2) system call.
RETURN VALUE
The explain_shmat_or_die function only returns on success, see shmat(2) for more information. On failure, prints an explanation and exits, it does not return.The explain_shmat_on_error function always returns the value return by the wrapped shmat(2) system call.
EXAMPLE
The explain_shmat_or_die function is intended to be used in a fashion similar to the following example:void *result = explain_shmat_or_die(shmid, shmaddr, shmflg);
SEE ALSO
- shmat(2)
- shared memory attach
- explain_shmat(3)
- explain shmat(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2011 Peter Miller
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