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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/libio/tst-atime.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/libio/tst-atime.c')
-rw-r--r-- | REORG.TODO/libio/tst-atime.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/REORG.TODO/libio/tst-atime.c b/REORG.TODO/libio/tst-atime.c new file mode 100644 index 0000000000..31ca59fec5 --- /dev/null +++ b/REORG.TODO/libio/tst-atime.c @@ -0,0 +1,120 @@ +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/stat.h> +#include <sys/statvfs.h> + + +static int do_test (void); +#define TEST_FUNCTION do_test () +#define TIMEOUT 5 +#include <test-skeleton.c> + + +static int +do_test (void) +{ + char *buf; + int fd; + FILE *fp; + int ch; + struct stat st1; + struct stat st2; + + buf = (char *) malloc (strlen (test_dir) + sizeof "/tst-atime.XXXXXX"); + if (buf == NULL) + { + printf ("cannot allocate memory: %m\n"); + return 1; + } + stpcpy (stpcpy (buf, test_dir), "/tst-atime.XXXXXX"); + + fd = mkstemp (buf); + if (fd == -1) + { + printf ("cannot open temporary file: %m\n"); + return 1; + } + +#ifdef ST_NOATIME + /* Make sure the filesystem doesn't have the noatime option set. If + statvfs is not available just continue. */ + struct statvfs sv; + int e = fstatvfs (fd, &sv); + if (e != ENOSYS) + { + if (e != 0) + { + printf ("cannot statvfs '%s': %m\n", buf); + return 1; + } + + if ((sv.f_flag & ST_NOATIME) != 0) + { + puts ("Bah! The filesystem is mounted with noatime"); + return 0; + } + } +#endif + + /* Make sure it gets removed. */ + add_temp_file (buf); + + if (write (fd, "some string\n", 12) != 12) + { + printf ("cannot write temporary file: %m\n"); + return 1; + } + + if (lseek (fd, 0, SEEK_SET) == (off_t) -1) + { + printf ("cannot reposition temporary file: %m\n"); + return 1; + } + + fp = fdopen (fd, "r"); + if (fp == NULL) + { + printf ("cannot create stream: %m\n"); + return 1; + } + + if (fstat (fd, &st1) == -1) + { + printf ("first stat failed: %m\n"); + return 1; + } + + sleep (2); + + ch = fgetc (fp); + if (ch != 's') + { + printf ("did not read correct character: got '%c', expected 's'\n", ch); + return 1; + } + + if (fstat (fd, &st2) == -1) + { + printf ("second stat failed: %m\n"); + return 1; + } + + if (st1.st_atime > st2.st_atime) + { + puts ("second atime smaller"); + return 1; + } + else if (st1.st_atime == st2.st_atime) + { + puts ("atime has not changed"); + return 1; + } + + fclose (fp); + + return 0; +} |