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-rw-r--r--test/misc/seek.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/test/misc/seek.c b/test/misc/seek.c
new file mode 100644
index 000000000..55404be6d
--- /dev/null
+++ b/test/misc/seek.c
@@ -0,0 +1,78 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <assert.h>
+
+#define ARRAY_SIZE(arr) (sizeof(arr)/sizeof(*arr))
+
+int main(void)
+{
+ struct {
+ off_t offset;
+ int whence;
+ } tests[] = {
+ { 0x00, SEEK_SET },
+ { 0x01, SEEK_SET },
+ { 0xFF, SEEK_SET }
+ };
+ char buf[2000];
+ off_t ret;
+ int i, fd;
+ FILE *fp;
+
+ fd = open("lseek.out", O_RDWR|O_CREAT, 0600);
+ if (fd == -1) {
+ perror("open(lseek.out) failed");
+ return 1;
+ }
+ unlink("lseek.out");
+ fp = fdopen(fd, "rw");
+ if (fp == NULL) {
+ perror("fopen(lseek.out) failed");
+ return 1;
+ }
+
+ memset(buf, 0xAB, sizeof(buf));
+ ret = write(fd, buf, sizeof(buf));
+ if (ret != sizeof(buf)) {
+ fprintf(stderr, "write() failed to write %i bytes (wrote %i): ", sizeof(buf), ret);
+ perror("");
+ return 1;
+ }
+
+ assert(fseeko64(fp, 1024, SEEK_SET) == 0);
+ assert(fseeko64(fp, (off_t)-16, SEEK_CUR) == 0);
+ ret = ftell(fp);
+ if (ret != (1024-16)) {
+ fprintf(stderr, "ftell() failed, we wanted pos %i but got %i: ", (1024-16), ret);
+ perror("");
+ return 1;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(tests); ++i) {
+ ret = lseek(fd, tests[i].offset, tests[i].whence);
+ if (ret != tests[i].offset) {
+ fprintf(stderr, "lseek(%i,%i) failed (wanted %i, got %i): ", tests[i].offset,
+ tests[i].whence, tests[i].offset, ret);
+ perror("");
+ return 1;
+ }
+ ret = fseek(fp, tests[i].offset, tests[i].whence);
+ if (ret != 0) {
+ fprintf(stderr, "fseek(%i,%i) failed (wanted 0, got %i): ", tests[i].offset,
+ tests[i].whence, ret);
+ perror("");
+ return 1;
+ }
+ }
+
+ fclose(fp);
+ close(fd);
+
+ printf("Success!\n");
+
+ return 0;
+}