X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Futils.c;h=e75bb9c8eecd21279a999c18f8c0bc4f132ef1e3;hb=4a54e34cf5629f9fed61f0b7d69ee3ba4d874bc6;hp=fd213c2044725993565f8352d9e6e05959d70292;hpb=214aeb163eb309c53793609871abbac1b793aa52;p=ppp.git

diff --git a/pppd/utils.c b/pppd/utils.c
index fd213c2..e75bb9c 100644
--- a/pppd/utils.c
+++ b/pppd/utils.c
@@ -819,7 +819,7 @@ lock(char *dev)
 #else /* LOCKLIB */
 
     char lock_buffer[12];
-    int fd, pid, n;
+    int fd, pid, n, siz;
 
 #ifdef SVR4
     struct stat sbuf;
@@ -906,11 +906,16 @@ lock(char *dev)
 
     pid = getpid();
 #ifndef LOCK_BINARY
+    siz = 11;
     slprintf(lock_buffer, sizeof(lock_buffer), "%10d\n", pid);
-    write (fd, lock_buffer, 11);
+    n = write (fd, lock_buffer, siz);
 #else
-    write(fd, &pid, sizeof (pid));
+    siz = sizeof (pid);
+    n = write(fd, &pid, siz);
 #endif
+    if (n != siz) {
+	error("Could not write pid to lock file when locking");
+    }
     close(fd);
     return 0;
 
@@ -934,7 +939,7 @@ relock(int pid)
     return -1;
 #else /* LOCKLIB */
 
-    int fd;
+    int fd, n, siz;
     char lock_buffer[12];
 
     if (lock_file[0] == 0)
@@ -947,11 +952,16 @@ relock(int pid)
     }
 
 #ifndef LOCK_BINARY
+    siz = 11;
     slprintf(lock_buffer, sizeof(lock_buffer), "%10d\n", pid);
-    write (fd, lock_buffer, 11);
+    n = write (fd, lock_buffer, siz);
 #else
-    write(fd, &pid, sizeof(pid));
+    siz = sizeof(pid);
+    n = write(fd, &pid, siz);
 #endif /* LOCK_BINARY */
+    if (n != siz) {
+	error("Could not write pid to lock file when locking");
+    }
     close(fd);
     return 0;