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-rw-r--r--fs/exec.c23
1 files changed, 18 insertions, 5 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 0db3fc3c5f0f..6270f8f20a63 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -58,7 +58,7 @@
#endif
int core_uses_pid;
-char core_pattern[65] = "core";
+char core_pattern[128] = "core";
int suid_dumpable = 0;
EXPORT_SYMBOL(suid_dumpable);
@@ -1463,6 +1463,7 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
int retval = 0;
int fsuid = current->fsuid;
int flag = 0;
+ int ispipe = 0;
binfmt = current->binfmt;
if (!binfmt || !binfmt->core_dump)
@@ -1504,22 +1505,34 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
lock_kernel();
format_corename(corename, core_pattern, signr);
unlock_kernel();
- file = filp_open(corename, O_CREAT | 2 | O_NOFOLLOW | O_LARGEFILE | flag, 0600);
+ if (corename[0] == '|') {
+ /* SIGPIPE can happen, but it's just never processed */
+ if(call_usermodehelper_pipe(corename+1, NULL, NULL, &file)) {
+ printk(KERN_INFO "Core dump to %s pipe failed\n",
+ corename);
+ goto fail_unlock;
+ }
+ ispipe = 1;
+ } else
+ file = filp_open(corename,
+ O_CREAT | 2 | O_NOFOLLOW | O_LARGEFILE, 0600);
if (IS_ERR(file))
goto fail_unlock;
inode = file->f_dentry->d_inode;
if (inode->i_nlink > 1)
goto close_fail; /* multiple links - don't dump */
- if (d_unhashed(file->f_dentry))
+ if (!ispipe && d_unhashed(file->f_dentry))
goto close_fail;
- if (!S_ISREG(inode->i_mode))
+ /* AK: actually i see no reason to not allow this for named pipes etc.,
+ but keep the previous behaviour for now. */
+ if (!ispipe && !S_ISREG(inode->i_mode))
goto close_fail;
if (!file->f_op)
goto close_fail;
if (!file->f_op->write)
goto close_fail;
- if (do_truncate(file->f_dentry, 0, 0, file) != 0)
+ if (!ispipe && do_truncate(file->f_dentry, 0, 0, file) != 0)
goto close_fail;
retval = binfmt->core_dump(signr, regs, file);