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From 89de07a9442072f88d49869d8ecd8d42bae050a0 Mon Sep 17 00:00:00 2001
From: Jouni Malinen <jouni@qca.qualcomm.com>
Date: Mon, 6 Oct 2014 16:27:44 +0300
Subject: [PATCH 1/3] Add os_exec() helper to run external programs
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
---
src/utils/os.h | 9 +++++++++
src/utils/os_unix.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++
src/utils/os_win32.c | 6 ++++++
3 files changed, 70 insertions(+)
--- a/src/utils/os.h
+++ b/src/utils/os.h
@@ -584,6 +584,15 @@ static inline void os_remove_in_array(vo
*/
size_t os_strlcpy(char *dest, const char *src, size_t siz);
+/**
+ * os_exec - Execute an external program
+ * @program: Path to the program
+ * @arg: Command line argument string
+ * @wait_completion: Whether to wait until the program execution completes
+ * Returns: 0 on success, -1 on error
+ */
+int os_exec(const char *program, const char *arg, int wait_completion);
+
#ifdef OS_REJECT_C_LIB_FUNCTIONS
#define malloc OS_DO_NOT_USE_malloc
--- a/src/utils/os_unix.c
+++ b/src/utils/os_unix.c
@@ -9,6 +9,7 @@
#include "includes.h"
#include <time.h>
+#include <sys/wait.h>
#ifdef ANDROID
#include <sys/capability.h>
@@ -540,3 +541,57 @@ char * os_strdup(const char *s)
}
#endif /* WPA_TRACE */
+
+
+int os_exec(const char *program, const char *arg, int wait_completion)
+{
+ pid_t pid;
+ int pid_status;
+
+ pid = fork();
+ if (pid < 0) {
+ perror("fork");
+ return -1;
+ }
+
+ if (pid == 0) {
+ /* run the external command in the child process */
+ const int MAX_ARG = 30;
+ char *_program, *_arg, *pos;
+ char *argv[MAX_ARG + 1];
+ int i;
+
+ _program = os_strdup(program);
+ _arg = os_strdup(arg);
+
+ argv[0] = _program;
+
+ i = 1;
+ pos = _arg;
+ while (i < MAX_ARG && pos && *pos) {
+ while (*pos == ' ')
+ pos++;
+ if (*pos == '\0')
+ break;
+ argv[i++] = pos;
+ pos = os_strchr(pos, ' ');
+ if (pos)
+ *pos++ = '\0';
+ }
+ argv[i] = NULL;
+
+ execv(program, argv);
+ perror("execv");
+ os_free(_program);
+ os_free(_arg);
+ exit(0);
+ return -1;
+ }
+
+ if (wait_completion) {
+ /* wait for the child process to complete in the parent */
+ waitpid(pid, &pid_status, 0);
+ }
+
+ return 0;
+}
--- a/src/utils/os_win32.c
+++ b/src/utils/os_win32.c
@@ -244,3 +244,9 @@ size_t os_strlcpy(char *dest, const char
return s - src - 1;
}
+
+
+int os_exec(const char *program, const char *arg, int wait_completion)
+{
+ return -1;
+}
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