diff options
Diffstat (limited to 'lib/libc/gen/setproctitle.c')
| -rw-r--r-- | lib/libc/gen/setproctitle.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/lib/libc/gen/setproctitle.c b/lib/libc/gen/setproctitle.c deleted file mode 100644 index cd705fb..0000000 --- a/lib/libc/gen/setproctitle.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Copyright (c) 1995 Peter Wemm <peter@freebsd.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, is permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice immediately at the beginning of the file, without modification, - * this list of conditions, and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Absolutely no warranty of function or purpose is made by the author - * Peter Wemm. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include "namespace.h" -#include <sys/types.h> -#include <sys/param.h> -#include <sys/exec.h> -#include <sys/sysctl.h> - -#include <vm/vm.h> -#include <vm/vm_param.h> -#include <vm/pmap.h> - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include "un-namespace.h" - -#include "libc_private.h" - -/* - * Older FreeBSD 2.0, 2.1 and 2.2 had different ps_strings structures and - * in different locations. - * 1: old_ps_strings at the very top of the stack. - * 2: old_ps_strings at SPARE_USRSPACE below the top of the stack. - * 3: ps_strings at the very top of the stack. - * This attempts to support a kernel built in the #2 and #3 era. - */ - -struct old_ps_strings { - char *old_ps_argvstr; - int old_ps_nargvstr; - char *old_ps_envstr; - int old_ps_nenvstr; -}; -#define OLD_PS_STRINGS ((struct old_ps_strings *) \ - (USRSTACK - SPARE_USRSPACE - sizeof(struct old_ps_strings))) - -#include <stdarg.h> - -#define SPT_BUFSIZE 2048 /* from other parts of sendmail */ - -void -setproctitle(const char *fmt, ...) -{ - static struct ps_strings *ps_strings; - static char *buf = NULL; - static char *obuf = NULL; - static char **oargv, *kbuf; - static int oargc = -1; - static char *nargv[2] = { NULL, NULL }; - char **nargvp; - int nargc; - int i; - va_list ap; - size_t len; - unsigned long ul_ps_strings; - int oid[4]; - - if (buf == NULL) { - buf = malloc(SPT_BUFSIZE); - if (buf == NULL) - return; - nargv[0] = buf; - } - - if (obuf == NULL ) { - obuf = malloc(SPT_BUFSIZE); - if (obuf == NULL) - return; - *obuf = '\0'; - } - - va_start(ap, fmt); - - if (fmt) { - buf[SPT_BUFSIZE - 1] = '\0'; - - if (fmt[0] == '-') { - /* skip program name prefix */ - fmt++; - len = 0; - } else { - /* print program name heading for grep */ - (void)snprintf(buf, SPT_BUFSIZE, "%s: ", _getprogname()); - len = strlen(buf); - } - - /* print the argument string */ - (void) vsnprintf(buf + len, SPT_BUFSIZE - len, fmt, ap); - - nargvp = nargv; - nargc = 1; - kbuf = buf; - } else if (*obuf != '\0') { - /* Idea from NetBSD - reset the title on fmt == NULL */ - nargvp = oargv; - nargc = oargc; - kbuf = obuf; - } else - /* Nothing to restore */ - return; - - va_end(ap); - - /* Set the title into the kernel cached command line */ - oid[0] = CTL_KERN; - oid[1] = KERN_PROC; - oid[2] = KERN_PROC_ARGS; - oid[3] = getpid(); - sysctl(oid, 4, 0, 0, kbuf, strlen(kbuf) + 1); - - if (ps_strings == NULL) { - len = sizeof(ul_ps_strings); - if (sysctlbyname("kern.ps_strings", &ul_ps_strings, &len, NULL, - 0) == -1) - ul_ps_strings = PS_STRINGS; - ps_strings = (struct ps_strings *)ul_ps_strings; - } - - /* PS_STRINGS points to zeroed memory on a style #2 kernel */ - if (ps_strings->ps_argvstr) { - /* style #3 */ - if (oargc == -1) { - /* Record our original args */ - oargc = ps_strings->ps_nargvstr; - oargv = ps_strings->ps_argvstr; - for (i = len = 0; i < oargc; i++) { - /* - * The program may have scribbled into its - * argv array, e.g., to remove some arguments. - * If that has happened, break out before - * trying to call strlen on a NULL pointer. - */ - if (oargv[i] == NULL) { - oargc = i; - break; - } - snprintf(obuf + len, SPT_BUFSIZE - len, "%s%s", - len ? " " : "", oargv[i]); - if (len) - len++; - len += strlen(oargv[i]); - if (len >= SPT_BUFSIZE) - break; - } - } - ps_strings->ps_nargvstr = nargc; - ps_strings->ps_argvstr = nargvp; - } else { - /* style #2 - we can only restore our first arg :-( */ - if (*obuf == '\0') - strncpy(obuf, OLD_PS_STRINGS->old_ps_argvstr, - SPT_BUFSIZE - 1); - OLD_PS_STRINGS->old_ps_nargvstr = 1; - OLD_PS_STRINGS->old_ps_argvstr = nargvp[0]; - } -} |
