SIMPLE SOLUTIONS

EXPLAIN_FLOCK_OR_DIE - reference manual online

Control advisory lock on open file and report errors.

Chapter
explain_flock_or_die(3)              Library Functions Manual             explain_flock_or_die(3)

NAME explain_flock_or_die - control advisory lock on open file and report errors
SYNOPSIS #include <libexplain/flock.h> void explain_flock_or_die(int fildes, int command); int explain_flock_on_error(int fildes, int command))
DESCRIPTION The explain_flock_or_die function is used to call the flock(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_flock(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_flock_on_error function is used to call the flock(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_flock(3) function, but still returns to the caller. fildes The fildes, exactly as to be passed to the flock(2) system call. command The command, exactly as to be passed to the flock(2) system call.
RETURN VALUE The explain_flock_or_die function only returns on success, see flock(2) for more informa‐ tion. On failure, prints an explanation and exits, it does not return. The explain_flock_on_error function always returns the value return by the wrapped flock(2) system call.
EXAMPLE The explain_flock_or_die function is intended to be used in a fashion similar to the fol‐ lowing example: explain_flock_or_die(fildes, command);
SEE ALSO flock(2) apply or remove an advisory lock on an open file explain_flock(3) explain flock(2) errors exit(2) terminate the calling process
explain_flock_or_die(3)
This manual Reference Other manuals
explain_flock_or_die(3) referred by explain(3) | explain_flock(3)
refer to _exit(2) | explain_flock(3) | flock(2)