[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/e2fsprogs/e2fsprogs-1.42.9/lib/fpopen.c b/ap/app/e2fsprogs/e2fsprogs-1.42.9/lib/fpopen.c
new file mode 100644
index 0000000..60af208
--- /dev/null
+++ b/ap/app/e2fsprogs/e2fsprogs-1.42.9/lib/fpopen.c
@@ -0,0 +1,116 @@
+/*
+ * fpopen.c --- unlike the libc popen, it directly executes the
+ * command instead of call out to the shell.
+ *
+ * Copyright Theodore Ts'o, 1996-1999.
+ *
+ * Permission to use this file is granted for any purposes, as long as
+ * this copyright statement is kept intact and the author is not held
+ * liable for any damages resulting from the use of this program.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
+ * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE.
+ */
+
+#include "config.h"
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <ctype.h>
+
+#define MAX_ARGV 256
+
+extern FILE *fpopen(const char *cmd, const char *mode);
+
+FILE *fpopen(const char *cmd, const char *mode)
+{
+ char *argv[MAX_ARGV];
+ int i = 0;
+ char *buf, *prog = 0;
+ char *p;
+ int do_stdin, do_stderr = 0;
+ int fds[2];
+ pid_t pid;
+
+ if (!mode) {
+ errno = EFAULT;
+ return NULL;
+ }
+
+ switch (*mode) {
+ case 'r':
+ do_stdin = 0;
+ break;
+ case 'w':
+ do_stdin = 1;
+ break;
+ default:
+ errno = EINVAL;
+ return NULL;
+ }
+ switch (*(mode+1)) {
+ case '&':
+ do_stderr = 1;
+ }
+
+ /*
+ * Create the argv vector....
+ */
+ buf = malloc(strlen(cmd)+1);
+ if (!buf)
+ return NULL;
+ strcpy(buf, cmd);
+ p = buf;
+ while (p && *p) {
+ if (isspace(*p)) {
+ p++;
+ continue;
+ }
+ if (i == 0)
+ prog = p;
+ argv[i++] = p;
+ p = strchr(p, ' ');
+ if (p)
+ *p++ = 0;
+ }
+
+ argv[i] = 0;
+
+ /*
+ * Get the pipe
+ */
+ if (pipe(fds) < 0)
+ return NULL;
+
+ /* Fork and execute the correct program. */
+ if ((pid = fork()) < 0) {
+ perror("fork");
+ return NULL;
+ } else if (pid == 0) {
+ if (do_stdin) {
+ close(fds[1]);
+ dup2(fds[0], 0);
+ } else {
+ close(fds[0]);
+ dup2(fds[1], 1);
+ if (do_stderr)
+ dup2(fds[1], 2);
+ }
+ (void) execvp(prog, argv);
+ perror(prog);
+ exit(1);
+ }
+ return fdopen(do_stdin ? fds[1] : fds[0], mode);
+}
+