diff options
Diffstat (limited to 'io/tst-closefrom.c')
| -rw-r--r-- | io/tst-closefrom.c | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/io/tst-closefrom.c b/io/tst-closefrom.c index d4c187073c..395ec0d894 100644 --- a/io/tst-closefrom.c +++ b/io/tst-closefrom.c @@ -24,31 +24,22 @@ #include <support/check.h> #include <support/descriptors.h> #include <support/xunistd.h> +#include <support/support.h> #include <array_length.h> #define NFDS 100 static int -open_multiple_temp_files (void) -{ - /* Check if the temporary file descriptor has no no gaps. */ - int lowfd = xopen ("/dev/null", O_RDONLY, 0600); - for (int i = 1; i <= NFDS; i++) - TEST_COMPARE (xopen ("/dev/null", O_RDONLY, 0600), lowfd + i); - return lowfd; -} - -static int closefrom_test (void) { struct support_descriptors *descrs = support_descriptors_list (); - int lowfd = open_multiple_temp_files (); + int lowfd = support_open_dev_null_range (NFDS, O_RDONLY, 0600); - const int maximum_fd = lowfd + NFDS; + const int maximum_fd = lowfd + NFDS - 1; const int half_fd = lowfd + NFDS / 2; - const int gap = maximum_fd / 4; + const int gap = lowfd + NFDS / 4; /* Close half of the descriptors and check result. */ closefrom (half_fd); @@ -58,7 +49,7 @@ closefrom_test (void) TEST_COMPARE (fcntl (i, F_GETFL), -1); TEST_COMPARE (errno, EBADF); } - for (int i = 0; i < half_fd; i++) + for (int i = lowfd; i < half_fd; i++) TEST_VERIFY (fcntl (i, F_GETFL) > -1); /* Create some gaps, close up to a threshold, and check result. */ @@ -74,7 +65,7 @@ closefrom_test (void) TEST_COMPARE (fcntl (i, F_GETFL), -1); TEST_COMPARE (errno, EBADF); } - for (int i = 0; i < gap; i++) + for (int i = lowfd; i < gap; i++) TEST_VERIFY (fcntl (i, F_GETFL) > -1); /* Close the remmaining but the last one. */ |