halt.c File Reference

#include <stdarg.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

Include dependency graph for halt.c:

Go to the source code of this file.

Functions
void	halt (const char *format,...)

---

Function Documentation

void halt	(	const char *	format,
			...
	)

Definition at line 26 of file halt.c.

References SIG_DFL, SIG_IGN, SIGHUP, and SIGQUIT.

{
    va_list     arg_ptr;
    const char *pstr;
    void        (*sig_func) ();

    va_start(arg_ptr, format);
    if (strncmp(format, "PERROR", 6) != 0)
        vfprintf(stderr, format, arg_ptr);
    else
    {
        for (pstr = format + 6; *pstr == ' ' || *pstr == ':'; pstr++)
            ;
        vfprintf(stderr, pstr, arg_ptr);
        perror("");
    }
    va_end(arg_ptr);
    fflush(stderr);

    /* call one clean up function if defined */
    if ((sig_func = signal(SIGTERM, SIG_DFL)) != SIG_DFL &&
        sig_func != SIG_IGN)
        (*sig_func) (0);
    else if ((sig_func = signal(SIGHUP, SIG_DFL)) != SIG_DFL &&
             sig_func != SIG_IGN)
        (*sig_func) (0);
    else if ((sig_func = signal(SIGINT, SIG_DFL)) != SIG_DFL &&
             sig_func != SIG_IGN)
        (*sig_func) (0);
    else if ((sig_func = signal(SIGQUIT, SIG_DFL)) != SIG_DFL &&
             sig_func != SIG_IGN)
        (*sig_func) (0);
    exit(1);
}