[hurd] 22/61: exec: abbreviate the task name if necessary

[Samuel Thibault]

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sthibault pushed a commit to branch upstream
in repository hurd.

commit ceffc4581e83ce1299c96a17c9c5352f491d488d
Author: Justus Winter <address@hidden>
Date:   Sun Apr 27 08:43:17 2014 +0200

    exec: abbreviate the task name if necessary
    
    * exec/exec.c (do_exec): If the formatted task name exceeds
    TASK_NAME_SIZE, abbreviate it.
---
 exec/exec.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/exec/exec.c b/exec/exec.c
index 935762e..b068f5e 100644
--- a/exec/exec.c
+++ b/exec/exec.c
@@ -1168,9 +1168,20 @@ do_exec (file_t file,
        goto out;
 
       char *name;
-      if (asprintf (&name, "%s(%d)", argv, pid) > 0)
+      int size = asprintf (&name, "%s(%d)", argv, pid);
+      if (size > 0)
        {
-         task_set_name (newtask, name);
+/* This is an internal implementational detail of the gnumach kernel.  */
+#define TASK_NAME_SIZE 32
+         if (size < TASK_NAME_SIZE)
+           task_set_name (newtask, name);
+         else
+           {
+             char *abbr = name + size - TASK_NAME_SIZE + 1;
+             abbr[0] = abbr[1] = abbr[2] = '.';
+             task_set_name (newtask, abbr);
+           }
+#undef TASK_NAME_SIZE
          free (name);
        }
     }

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