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fix symlink race. based mostly on patch from the FreeBSD ports tree.

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Reviewed by: beck@
This commit is contained in:
brad 2001-01-16 22:29:27 +00:00
parent 7c5c144eba
commit 7416d88eea
1 changed files with 33 additions and 0 deletions
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33
shells/bash/patches/patch-execute_cmd.c Normal file
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@ -0,0 +1,33 @@
--- execute_cmd.c.orig Thu Jun 8 11:29:00 1995
+++ execute_cmd.c Tue Jan 16 16:30:39 2001
@@ -2714,10 +2714,11 @@
{
WORD_DESC *redirectee = redirect->redirectee.filename;
int redir_fd = redirect->redirectee.dest;
- int fd, redirector = redirect->redirector;
+ int fd = -1, redirector = redirect->redirector;
char *redirectee_word;
enum r_instruction ri = redirect->instruction;
REDIRECT *new_redirect;
+ mode_t um;
if (ri == r_duplicating_input_word || ri == r_duplicating_output_word)
{
@@ -2938,11 +2939,14 @@
pid_t pid = getpid ();
/* Make the filename for the temp file. */
- sprintf (filename, "/tmp/t%d-sh", pid);
+ sprintf (filename, "/tmp/t-sh-XXXXXX", pid);
- fd = open (filename, O_TRUNC | O_WRONLY | O_CREAT, 0666);
- if (fd < 0)
+ fd = mkstemp (filename);
+ if (fd != -1)
return (errno);
+ um = umask (022);
+ umask (um);
+ fchmod (fd, 0666 & ~um);
errno = 0; /* XXX */
if (redirectee->word)