diff options
author | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2016-10-24 20:22:12 +0200 |
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committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2016-10-24 20:22:12 +0200 |
commit | 7988979a722b4cdf287b2093956a76a3f19b9897 (patch) | |
tree | d35e251d0472ceca55a2eef61cff261c8ee68fab /test/misc/fdopen.c |
add uClibc-ng test directory
Diffstat (limited to 'test/misc/fdopen.c')
-rw-r--r-- | test/misc/fdopen.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/test/misc/fdopen.c b/test/misc/fdopen.c new file mode 100644 index 0000000..97e66de --- /dev/null +++ b/test/misc/fdopen.c @@ -0,0 +1,52 @@ +/* Test for fdopen bugs. */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> + +#define assert(x) \ + if (!(x)) \ + { \ + fputs ("test failed: " #x "\n", stderr); \ + retval = 1; \ + goto the_end; \ + } + +int +main (int argc, char *argv[]) +{ + char name[256]; + FILE *fp = NULL; + int retval = 0; + int fd; + + /* hack to get a tempfile name w/out using tmpname() + * as that func causes a link time warning */ + sprintf(name, "%s-uClibc-test.XXXXXX", __FILE__); + fd = mkstemp(name); + close(fd); + + fp = fopen (name, "w"); + assert (fp != NULL) + assert (fputs ("foobar and baz", fp) > 0); + assert (fclose (fp) == 0); + fp = NULL; + + fd = open (name, O_RDWR|O_CREAT, 0660); + assert (fd != -1); + assert (lseek (fd, 5, SEEK_SET) == 5); + + fp = fdopen (fd, "a"); + assert (fp != NULL); + /* SuSv3 says that doing a fdopen() does not reset the file position, + * thus the '5' here is correct, not '14'. */ + assert (ftell (fp) == 5); + +the_end: + if (fp != NULL) + assert (fclose (fp) == 0); + unlink (name); + + return retval; +} |