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| author | NIIBE Yutaka <gniibe@fsij.org> | 2018-10-02 07:22:24 +0200 |
|---|---|---|
| committer | NIIBE Yutaka <gniibe@fsij.org> | 2018-10-02 07:22:24 +0200 |
| commit | 50b02dba2060a8969da47b18d9c0ecdccbd30db4 (patch) | |
| tree | 3baa8916fd8bd8debbc4d934da145f193eb92307 /common/sysutils.c | |
| parent | g10,scd: Support UIF changing command. (diff) | |
| download | gnupg2-50b02dba2060a8969da47b18d9c0ecdccbd30db4.tar.xz gnupg2-50b02dba2060a8969da47b18d9c0ecdccbd30db4.zip | |
common: Fix gnupg_reopen_std.
* common/sysutils.c (gnupg_reopen_std): Use fcntl instead of fstat.
--
When gpg was invoked by a Perl web application on FreeBSD, fstat in
gnupg_reopen_std failed with EBADF. Using fcntl, which is considered
lighter than fstat, it works fine. Since uur purpose is to check if
file descriptor is valid or not, lighter operation is better.
Reported-by: Marcin Gryszkalis <mg@fork.pl>
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
Diffstat (limited to 'common/sysutils.c')
| -rw-r--r-- | common/sysutils.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/common/sysutils.c b/common/sysutils.c index 55a7ee9ec..0a3dc2eaf 100644 --- a/common/sysutils.c +++ b/common/sysutils.c @@ -551,14 +551,13 @@ gnupg_tmpfile (void) void gnupg_reopen_std (const char *pgmname) { -#if defined(HAVE_STAT) && !defined(HAVE_W32_SYSTEM) - struct stat statbuf; +#ifdef F_GETFD int did_stdin = 0; int did_stdout = 0; int did_stderr = 0; FILE *complain; - if (fstat (STDIN_FILENO, &statbuf) == -1 && errno ==EBADF) + if (fcntl (STDIN_FILENO, F_GETFD) == -1 && errno ==EBADF) { if (open ("/dev/null",O_RDONLY) == STDIN_FILENO) did_stdin = 1; @@ -566,7 +565,7 @@ gnupg_reopen_std (const char *pgmname) did_stdin = 2; } - if (fstat (STDOUT_FILENO, &statbuf) == -1 && errno == EBADF) + if (fcntl (STDOUT_FILENO, F_GETFD) == -1 && errno == EBADF) { if (open ("/dev/null",O_WRONLY) == STDOUT_FILENO) did_stdout = 1; @@ -574,7 +573,7 @@ gnupg_reopen_std (const char *pgmname) did_stdout = 2; } - if (fstat (STDERR_FILENO, &statbuf)==-1 && errno==EBADF) + if (fcntl (STDERR_FILENO, F_GETFD)==-1 && errno==EBADF) { if (open ("/dev/null", O_WRONLY) == STDERR_FILENO) did_stderr = 1; @@ -607,7 +606,7 @@ gnupg_reopen_std (const char *pgmname) if (did_stdin == 2 || did_stdout == 2 || did_stderr == 2) exit (3); -#else /* !(HAVE_STAT && !HAVE_W32_SYSTEM) */ +#else /* !F_GETFD */ (void)pgmname; #endif } |