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| author | Tobias Brunner <tobias@strongswan.org> | 2015-08-04 19:17:37 +0200 |
|---|---|---|
| committer | Tobias Brunner <tobias@strongswan.org> | 2015-08-17 11:19:48 +0200 |
| commit | 6d9cd1d66b9817c2975b63b49ef9e6b8ef9fc30e (patch) | |
| tree | f1faa580de843bc2ad6c566650d028451a69968e /src/libstrongswan/utils/utils.c | |
| parent | f25f4192c7ea7f3ccb6759dc000a3272e9c4e815 (diff) | |
| download | strongswan-6d9cd1d66b9817c2975b63b49ef9e6b8ef9fc30e.tar.bz2 strongswan-6d9cd1d66b9817c2975b63b49ef9e6b8ef9fc30e.tar.xz | |
utils: Check for dirfd(3)
Not all POSIX compatible systems might provide it yet. If not, we close
the lowest FD to close and hope it gets reused by opendir().
Diffstat (limited to 'src/libstrongswan/utils/utils.c')
| -rw-r--r-- | src/libstrongswan/utils/utils.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/libstrongswan/utils/utils.c b/src/libstrongswan/utils/utils.c index c396540ec..b4a4db802 100644 --- a/src/libstrongswan/utils/utils.c +++ b/src/libstrongswan/utils/utils.c @@ -175,10 +175,19 @@ void closefrom(int low_fd) DIR *dir; struct dirent *entry; +#ifndef HAVE_DIRFD + /* if we don't have dirfd() lets close the lowest FD and hope it gets reused + * by opendir() */ + close(low_fd); + dir_fd = low_fd++; +#endif + dir = opendir(FD_DIR); if (dir) { +#ifdef HAVE_DIRFD dir_fd = dirfd(dir); +#endif while ((entry = readdir(dir))) { if (!isdigit(entry->d_name[0])) |