check for error return from fork()

Trivial fixup for fork() callsites which do not check for errors.

Signed-off-by: Paul T Darga <pdarga@umich.edu>
Signed-off-by: Junio C Hamano <junkio@cox.net>

3 files changed, 12 insertions, 2 deletions

diff --git a/connect.c b/connect.c
index eca94f7548..52d709e58d 100644
--- a/connect.c
+++ b/connect.c
@@ -657,6 +657,8 @@ int git_connect(int fd[2], char *url, const char *prog)
 	if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
 		die("unable to create pipe pair for communication");
 	pid = fork();
+	if (pid < 0)
+		die("unable to fork");
 	if (!pid) {
 		snprintf(command, sizeof(command), "%s %s", prog,
 			 sq_quote(path));
diff --git a/imap-send.c b/imap-send.c
index 52e2400b57..285ad29afb 100644
--- a/imap-send.c
+++ b/imap-send.c
@@ -924,6 +924,7 @@ imap_open_store( imap_server_conf_t *srvc )
 	struct hostent *he;
 	struct sockaddr_in addr;
 	int s, a[2], preauth;
+	pid_t pid;
 
 	ctx = xcalloc( sizeof(*ctx), 1 );
 
@@ -941,7 +942,10 @@ imap_open_store( imap_server_conf_t *srvc )
 			exit( 1 );
 		}
 
-		if (fork() == 0) {
+		pid = fork();
+		if (pid < 0)
+			_exit( 127 );
+		if (!pid) {
 			if (dup2( a[0], 0 ) == -1 || dup2( a[0], 1 ) == -1)
 				_exit( 127 );
 			close( a[0] );
diff --git a/rsh.c b/rsh.c
index d66526941f..07166addd9 100644
--- a/rsh.c
+++ b/rsh.c
@@ -48,6 +48,7 @@ int setup_connection(int *fd_in, int *fd_out, const char *remote_prog,
 	int sizen;
 	int of;
 	int i;
+	pid_t pid;
 
 	if (!strcmp(url, "-")) {
 		*fd_in = 0;
@@ -91,7 +92,10 @@ int setup_connection(int *fd_in, int *fd_out, const char *remote_prog,
 	if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
 		return error("Couldn't create socket");
 
-	if (!fork()) {
+	pid = fork();
+	if (pid < 0)
+		return error("Couldn't fork");
+	if (!pid) {
 		const char *ssh, *ssh_basename;
 		ssh = getenv("GIT_SSH");
 		if (!ssh) ssh = "ssh";