#include <sys/stat.h>
#include <sys/mman.h>
-/* return index of the first byte not matching given byte
- * or buffer size if all bytes are matching */
+/*
+ * return index of the first byte not matching given byte
+ * or buffer size if all bytes are matching
+ */
static size_t check_bytes(const char *buf, int byte, size_t len)
{
- const char *p;
+ const char *p;
- for (p = buf; p < buf + len; p++)
- if (*p != byte)
- break;
- return p - buf;
+ for (p = buf; p < buf + len; p++)
+ if (*p != byte)
+ break;
+ return p - buf;
}
int main(int argc, char **argv)
{
#ifdef O_DIRECT
- int fd;
- char *buf, *fname;
- int blocks, seek_blocks;
- long len;
- off64_t seek;
- struct stat64 st;
- char pad = 0xba;
- int action;
- int rc;
-
- if (argc < 5 || argc > 6) {
- printf("Usage: %s <read/write/rdwr/readhole> file seek nr_blocks [blocksize]\n", argv[0]);
- return 1;
- }
-
- if (!strcmp(argv[1], "read"))
- action = O_RDONLY;
- else if (!strcmp(argv[1], "write"))
- action = O_WRONLY;
- else if (!strcmp(argv[1], "rdwr"))
- action = O_RDWR;
- else if (!strcmp(argv[1], "readhole")) {
- action = O_RDONLY;
- pad = 0;
- } else {
- printf("Usage: %s <read/write/rdwr> file seek nr_blocks [blocksize]\n", argv[0]);
- return 1;
- }
-
- fname = argv[2];
- seek_blocks = strtoul(argv[3], 0, 0);
- blocks = strtoul(argv[4], 0, 0);
- if (!blocks) {
- printf("Usage: %s <read/write/rdwr> file seek nr_blocks [blocksize]\n", argv[0]);
- return 1;
- }
-
- fd = open(fname, O_LARGEFILE | O_DIRECT | O_RDWR | O_CREAT, 0644);
- if (fd == -1) {
- printf("Cannot open %s: %s\n", fname, strerror(errno));
- return 1;
- }
-
- if (argc >= 6)
- st.st_blksize = strtoul(argv[5], 0, 0);
- else if (fstat64(fd, &st) < 0) {
- printf("Cannot stat %s: %s\n", fname, strerror(errno));
- return 1;
- }
+ int fd;
+ char *buf, *fname;
+ int blocks, seek_blocks;
+ long len;
+ off64_t seek;
+ struct stat64 st;
+ char pad = 0xba;
+ int action;
+ int rc;
+
+ if (argc < 5 || argc > 6) {
+ printf("Usage: %s <read/write/rdwr/readhole> file seek nr_blocks [blocksize]\n",
+ argv[0]);
+ return 1;
+ }
+
+ if (!strcmp(argv[1], "read")) {
+ action = O_RDONLY;
+ } else if (!strcmp(argv[1], "write")) {
+ action = O_WRONLY;
+ } else if (!strcmp(argv[1], "rdwr")) {
+ action = O_RDWR;
+ } else if (!strcmp(argv[1], "readhole")) {
+ action = O_RDONLY;
+ pad = 0;
+ } else {
+ printf("Usage: %s <read/write/rdwr> file seek nr_blocks [blocksize]\n",
+ argv[0]);
+ return 1;
+ }
+
+ fname = argv[2];
+ seek_blocks = strtoul(argv[3], 0, 0);
+ blocks = strtoul(argv[4], 0, 0);
+ if (!blocks) {
+ printf("Usage: %s <read/write/rdwr> file seek nr_blocks [blocksize]\n",
+ argv[0]);
+ return 1;
+ }
+
+ fd = open(fname, O_LARGEFILE | O_DIRECT | O_RDWR | O_CREAT, 0644);
+ if (fd == -1) {
+ printf("Cannot open %s: %s\n", fname, strerror(errno));
+ return 1;
+ }
+
+ if (argc >= 6) {
+ st.st_blksize = strtoul(argv[5], 0, 0);
+ } else if (fstat64(fd, &st) < 0) {
+ printf("Cannot stat %s: %s\n", fname, strerror(errno));
+ return 1;
+ }
printf("directio on %s for %dx%lu bytes\n", fname, blocks,
(unsigned long)st.st_blksize);
- seek = (off64_t)seek_blocks * (off64_t)st.st_blksize;
- len = blocks * st.st_blksize;
-
- buf = mmap(0, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0);
- if (buf == MAP_FAILED) {
- printf("No memory %s\n", strerror(errno));
- return 1;
- }
- memset(buf, pad, len);
-
- if (action == O_WRONLY || action == O_RDWR) {
- if (lseek64(fd, seek, SEEK_SET) < 0) {
- printf("lseek64 failed: %s\n", strerror(errno));
- return 1;
- }
-
- rc = write(fd, buf, len);
- if (rc != len) {
- printf("Write error %s (rc = %d, len = %ld)\n",
- strerror(errno), rc, len);
- return 1;
- }
- }
-
- if (action == O_RDONLY || action == O_RDWR) {
- if (lseek64(fd, seek, SEEK_SET) < 0) {
- printf("Cannot seek %s\n", strerror(errno));
- return 1;
- }
- /* reset all bytes to something nor 0x0 neither 0xab */
- memset(buf, 0x5e, len);
- rc = read(fd, buf, len);
- if (rc != len) {
- printf("Read error: %s rc = %d\n",strerror(errno),rc);
- return 1;
- }
-
- if (check_bytes(buf, pad, len) != len) {
- printf("Data mismatch\n");
- return 1;
- }
- }
-
- printf("PASS\n");
- return 0;
+ seek = (off64_t)seek_blocks * (off64_t)st.st_blksize;
+ len = blocks * st.st_blksize;
+
+ buf = mmap(0, len,
+ PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, 0, 0);
+ if (buf == MAP_FAILED) {
+ printf("No memory %s\n", strerror(errno));
+ return 1;
+ }
+ memset(buf, pad, len);
+
+ if (action == O_WRONLY || action == O_RDWR) {
+ if (lseek64(fd, seek, SEEK_SET) < 0) {
+ printf("lseek64 failed: %s\n", strerror(errno));
+ return 1;
+ }
+
+ rc = write(fd, buf, len);
+ if (rc != len) {
+ printf("Write error %s (rc = %d, len = %ld)\n",
+ strerror(errno), rc, len);
+ return 1;
+ }
+ }
+
+ if (action == O_RDONLY || action == O_RDWR) {
+ if (lseek64(fd, seek, SEEK_SET) < 0) {
+ printf("Cannot seek %s\n", strerror(errno));
+ return 1;
+ }
+ /* reset all bytes to something nor 0x0 neither 0xab */
+ memset(buf, 0x5e, len);
+ rc = read(fd, buf, len);
+ if (rc != len) {
+ printf("Read error: %s rc = %d\n", strerror(errno), rc);
+ return 1;
+ }
+
+ if (check_bytes(buf, pad, len) != len) {
+ printf("Data mismatch\n");
+ return 1;
+ }
+ }
+
+ printf("PASS\n");
+ return 0;
#else /* !O_DIRECT */
#warning O_DIRECT not defined, directio test will fail
- printf("O_DIRECT not defined\n");
- return 1;
+ printf("O_DIRECT not defined\n");
+ return 1;
#endif /* !O_DIRECT */
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff