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| author | Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2005-05-05 16:16:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-05 16:36:48 -0700 |
| commit | 3677209239ed71d2654e73eecfab1dbec2af11a9 (patch) | |
| tree | 125d9d7553c5f6dc6ad030e4c829a5bf71ab3ef5 | |
| parent | 291c4a75ce7632ee5c565359fb875ba0597f76be (diff) | |
| download | linux-3677209239ed71d2654e73eecfab1dbec2af11a9.tar.gz linux-3677209239ed71d2654e73eecfab1dbec2af11a9.tar.bz2 linux-3677209239ed71d2654e73eecfab1dbec2af11a9.zip | |
[PATCH] comments on locking of task->comm
Add some comments about task->comm, to explain what it is near its definition
and provide some important pointers to its uses.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | fs/exec.c | 4 | ||||
| -rw-r--r-- | include/linux/sched.h | 7 |
2 files changed, 8 insertions, 3 deletions
diff --git a/fs/exec.c b/fs/exec.c index 52acff3f44f0..e56ee2437025 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -869,9 +869,11 @@ int flush_old_exec(struct linux_binprm * bprm) if (current->euid == current->uid && current->egid == current->gid) current->mm->dumpable = 1; name = bprm->filename; + + /* Copies the binary name from after last slash */ for (i=0; (ch = *(name++)) != '\0';) { if (ch == '/') - i = 0; + i = 0; /* overwrite what we wrote */ else if (i < (sizeof(tcomm) - 1)) tcomm[i++] = ch; diff --git a/include/linux/sched.h b/include/linux/sched.h index 5f868a588581..4dbb109022f3 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -578,7 +578,7 @@ struct task_struct { unsigned long flags; /* per process flags, defined below */ unsigned long ptrace; - int lock_depth; /* Lock depth */ + int lock_depth; /* BKL lock depth */ int prio, static_prio; struct list_head run_list; @@ -661,7 +661,10 @@ struct task_struct { struct key *thread_keyring; /* keyring private to this thread */ #endif int oomkilladj; /* OOM kill score adjustment (bit shift). */ - char comm[TASK_COMM_LEN]; + char comm[TASK_COMM_LEN]; /* executable name excluding path + - access with [gs]et_task_comm (which lock + it with task_lock()) + - initialized normally by flush_old_exec */ /* file system info */ int link_count, total_link_count; /* ipc stuff */ |