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Adjust run_command function

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topjohnwu
2017-07-10 22:29:53 +08:00
parent 3d43c3c5bc
commit d75fa62cab
6 changed files with 15 additions and 15 deletions
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jni/utils/misc.c
+6 -6
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@@ -221,21 +221,21 @@ void setup_sighandlers(void (*handler)(int)) {
/*
fd == NULL -> Ignore output
*fd == 0 -> Open pipe and set *fd to the read end
*fd != 0 -> STDOUT (or STDERR) will be redirected to *fd
*fd < 0 -> Open pipe and set *fd to the read end
*fd >= 0 -> STDOUT (or STDERR) will be redirected to *fd
*/
int run_command(int err, int *fd, const char *path, char *const argv[]) {
int pipefd[2], writeEnd = -1;
if (fd) {
if (*fd) {
writeEnd = *fd;
} else {
if (pipe(pipefd) == -1)
if (*fd < 0) {
if (xpipe2(pipefd, O_CLOEXEC) == -1)
return -1;
writeEnd = pipefd[1];
// Give the read end of the pipe
*fd = pipefd[0];
} else {
writeEnd = *fd;
}
}