53dd513176
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
95 lines
3.8 KiB
C
95 lines
3.8 KiB
C
/*****************************************************************************/
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/* */
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/* spawn.c */
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/* */
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/* Execute other external programs */
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/* */
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/* */
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/* */
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/* (C) 1999 Ullrich von Bassewitz */
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/* Wacholderweg 14 */
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/* D-70597 Stuttgart */
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/* EMail: uz@musoftware.de */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include "error.h"
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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int spawnvp (int Mode, const char* File, char* const argv [])
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/* Execute the given program searching and wait til it terminates. The Mode
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* argument is ignored (compatibility only). The result of the function is
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* the return code of the program. The function will terminate the program
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* on errors.
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*/
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{
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int Status = 0;
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/* Fork */
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int pid = fork ();
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if (pid < 0) {
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/* Error forking */
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Error ("Cannot fork: %s", strerror (errno));
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} else if (pid == 0) {
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/* The son - exec the program */
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if (execvp (File, argv) < 0) {
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Error ("Cannot exec `%s': %s", File, strerror (errno));
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}
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} else {
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/* The father: Wait for the subprocess to terminate */
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if (waitpid (pid, &Status, 0) < 0) {
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Error ("Failure waiting for subprocess: %s", strerror (errno));
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}
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/* Examine the child status */
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if (!WIFEXITED (Status)) {
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Error ("Subprocess `%s' aborted by signal %d", File, WTERMSIG (Status));
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}
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}
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/* Only the father goes here, we place a return here regardless of that
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* to avoid compiler warnings.
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*/
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return WEXITSTATUS (Status);
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}
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