(procfs_system_process_attributes): Fix cmdline in case /proc/PID/cmdline

is empty.

1 files changed, 10 insertions, 10 deletions

diff --git a/src/process.c b/src/process.c
index 80a657b2eda..75f36c5fce9 100644
--- a/src/process.c
+++ b/src/process.c
@@ -7419,17 +7419,17 @@ procfs_system_process_attributes (pid)
   fd = emacs_open (fn, O_RDONLY, 0);
   if (fd >= 0)
     {
-      for (cmdsize = 0; emacs_read (fd, &c, 1) == 1; cmdsize++)
+      for (cmdline_size = 0; emacs_read (fd, &c, 1) == 1; cmdline_size++)
         {
           if (isspace (c) || c == '\\')
-            cmdsize++;  /* for later quoting, see below */
+            cmdline_size++;     /* for later quoting, see below */
         }
-      if (cmdsize)
+      if (cmdline_size)
         {
-          cmdline = xmalloc (cmdsize + 1);
+          cmdline = xmalloc (cmdline_size + 1);
           lseek (fd, 0L, SEEK_SET);
           cmdline[0] = '\0';
-          if ((nread = read (fd, cmdline, cmdsize)) >= 0)
+          if ((nread = read (fd, cmdline, cmdline_size)) >= 0)
             cmdline[nread++] = '\0';
           /* We don't want trailing null characters.  */
           for (p = cmdline + nread - 1; p > cmdline && !*p; p--)
@@ -7446,18 +7446,18 @@ procfs_system_process_attributes (pid)
               else if (*p == '\0')
                 *p = ' ';
             }
-          cmdsize = nread;
+          cmdline_size = nread;
         }
       else
         {
-          cmdsize = strlen (cmd) + 2;
-          cmdline = xmalloc (cmdsize + 1);
+          cmdline_size = cmdsize + 2;
+          cmdline = xmalloc (cmdline_size + 1);
           strcpy (cmdline, "[");
-          strcat (strcat (cmdline, cmd), "]");
+          strcat (strncat (cmdline, cmd, cmdsize), "]");
         }
       emacs_close (fd);
       /* Command line is encoded in locale-coding-system; decode it.  */
-      cmd_str = make_unibyte_string (cmdline, cmdsize);
+      cmd_str = make_unibyte_string (cmdline, cmdline_size);
       decoded_cmd = code_convert_string_norecord (cmd_str,
                                                   Vlocale_coding_system, 0);
       xfree (cmdline);