tools/hv: Fix exit() error code

Linux native exit codes are 8-bit unsigned values.  exit(-1) results
in an exit code of 255, which is usually reserved for shells reporting
'command not found'.  Use the portable value EXIT_FAILURE.  (Not that
this matters much for a daemon.)

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 4514fb4..01b3ca5 100644 (file)
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -122,7 +122,7 @@ static void kvp_acquire_lock(int pool)
 
        if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) {
                syslog(LOG_ERR, "Failed to acquire the lock pool: %d", pool);
-               exit(-1);
+               exit(EXIT_FAILURE);
        }
 }
 
@@ -134,7 +134,7 @@ static void kvp_release_lock(int pool)
        if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) {
                perror("fcntl");
                syslog(LOG_ERR, "Failed to release the lock pool: %d", pool);
-               exit(-1);
+               exit(EXIT_FAILURE);
        }
 }
 
@@ -153,7 +153,7 @@ static void kvp_update_file(int pool)
        if (!filep) {
                kvp_release_lock(pool);
                syslog(LOG_ERR, "Failed to open file, pool: %d", pool);
-               exit(-1);
+               exit(EXIT_FAILURE);
        }
 
        bytes_written = fwrite(kvp_file_info[pool].records,
@@ -179,7 +179,7 @@ static void kvp_update_mem_state(int pool)
        if (!filep) {
                kvp_release_lock(pool);
                syslog(LOG_ERR, "Failed to open file, pool: %d", pool);
-               exit(-1);
+               exit(EXIT_FAILURE);
        }
        while (!feof(filep)) {
                readp = &record[records_read];
@@ -196,7 +196,7 @@ static void kvp_update_mem_state(int pool)
 
                        if (record == NULL) {
                                syslog(LOG_ERR, "malloc failed");
-                               exit(-1);
+                               exit(EXIT_FAILURE);
                        }
                        continue;
                }
@@ -225,7 +225,7 @@ static int kvp_file_init(void)
        if (access("/var/opt/hyperv", F_OK)) {
                if (mkdir("/var/opt/hyperv", S_IRUSR | S_IWUSR | S_IROTH)) {
                        syslog(LOG_ERR, " Failed to create /var/opt/hyperv");
-                       exit(-1);
+                       exit(EXIT_FAILURE);
                }
        }
 
@@ -1358,13 +1358,13 @@ int main(void)
 
        if (kvp_file_init()) {
                syslog(LOG_ERR, "Failed to initialize the pools");
-               exit(-1);
+               exit(EXIT_FAILURE);
        }
 
        fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
        if (fd < 0) {
                syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd);
-               exit(-1);
+               exit(EXIT_FAILURE);
        }
        addr.nl_family = AF_NETLINK;
        addr.nl_pad = 0;
@@ -1376,7 +1376,7 @@ int main(void)
        if (error < 0) {
                syslog(LOG_ERR, "bind failed; error:%d", error);
                close(fd);
-               exit(-1);
+               exit(EXIT_FAILURE);
        }
        sock_opt = addr.nl_groups;
        setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt));
@@ -1396,7 +1396,7 @@ int main(void)
        if (len < 0) {
                syslog(LOG_ERR, "netlink_send failed; error:%d", len);
                close(fd);
-               exit(-1);
+               exit(EXIT_FAILURE);
        }
 
        pfd.fd = fd;
@@ -1608,7 +1608,7 @@ kvp_done:
                len = netlink_send(fd, incoming_cn_msg);
                if (len < 0) {
                        syslog(LOG_ERR, "net_link send failed; error:%d", len);
-                       exit(-1);
+                       exit(EXIT_FAILURE);
                }
        }