Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=62e5b05db6cd5dd9cf9614cc5d2d0702c1e339bb
Commit: 62e5b05db6cd5dd9cf9614cc5d2d0702c1e339bb
Parent: d7083174a2ca5ff80de773d2054caee2f77bf9f9
Author: Satoru Takeuchi <[EMAIL PROTECTED]>
AuthorDate: Fri Jun 1 00:47:06 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Fri Jun 1 08:18:29 2007 -0700
Better documentation for ERESTARTSYS
Add comment for errnos related to restart syscall to avoid the leakage of
them to user programs.
Signed-off-by: Satoru Takeuchi <[EMAIL PROTECTED]>
Cc: Oleg Nesterov <[EMAIL PROTECTED]>
Acked-by: Roland McGrath <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
include/linux/errno.h | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/include/linux/errno.h b/include/linux/errno.h
index d90b80f..4668583 100644
--- a/include/linux/errno.h
+++ b/include/linux/errno.h
@@ -5,7 +5,12 @@
#ifdef __KERNEL__
-/* Should never be seen by user programs */
+/*
+ * These should never be seen by user programs. To return one of ERESTART*
+ * codes, signal_pending() MUST be set. Note that ptrace can observe these
+ * at syscall exit tracing, but they will never be left for the debugged user
+ * process to see.
+ */
#define ERESTARTSYS 512
#define ERESTARTNOINTR 513
#define ERESTARTNOHAND 514 /* restart if no handler.. */
-
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