/* $Xorg: misc.c,v 1.4 2001/02/09 02:06:01 xorgcvs Exp $ */ /****************************************************************************** Copyright 1993, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. ******************************************************************************/ /* $XFree86: xc/programs/xsm/misc.c,v 1.5 2001/07/25 15:05:29 dawes Exp $ */ #include "xsm.h" #ifdef NOPUTENV /* * define our own putenv() if the system doesn't have one. * putenv(s): place s (a string of the form "NAME=value") in * the environment; replacing any existing NAME. s is placed in * environment, so if you change s, the environment changes (like * putenv on a sun). Binding removed if you putenv something else * called NAME. */ int putenv(char *s) { char *v; int varlen, idx; extern char **environ; char **newenv; static int virgin = 1; /* true while "environ" is a virgin */ v = strchr(s, '='); if(v == 0) return 0; /* punt if it's not of the right form */ varlen = (v + 1) - s; for (idx = 0; environ[idx] != 0; idx++) { if (strncmp(environ[idx], s, varlen) == 0) { if(v[1] != 0) { /* true if there's a value */ environ[idx] = s; return 0; } else { do { environ[idx] = environ[idx+1]; } while(environ[++idx] != 0); return 0; } } } /* add to environment (unless no value; then just return) */ if(v[1] == 0) return 0; if(virgin) { register i; newenv = (char **) XtMalloc((unsigned) ((idx + 2) * sizeof(char*))); if(newenv == 0) return -1; for(i = idx-1; i >= 0; --i) newenv[i] = environ[i]; virgin = 0; /* you're not a virgin anymore, sweety */ } else { newenv = (char **) realloc((char *) environ, (unsigned) ((idx + 2) * sizeof(char*))); if (newenv == 0) return -1; } environ = newenv; environ[idx] = s; environ[idx+1] = 0; return 0; } #endif /* NOPUTENV */ int strbw(char *a, char *b) { return !strncmp (a, b, strlen (b)); } #if defined(sun) && defined(SVR4) #include <sys/wait.h> int System(char *s) { int pid, status; if ((pid = fork ()) == 0) { (void) setpgrp(); execl ("/bin/sh", "sh", "-c", s, 0); } else waitpid (pid, &status, 0); return status; } #endif void nomem(void) { fprintf (stderr, "Insufficient memory.\n"); exit (255); }