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https://github.com/linux-apfs/apfstests.git
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xfstests: randholes: encapsulate argument parsing
Move the argument parsing code out of main() and into a separate parseargs() routine. The name of the target file for the test is returned by parseargs() if no error occurs. Signed-off-by: Alex Elder <aelder@sgi.com> Acked-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Alex Elder
+75
-59
@@ -81,6 +81,76 @@ usage(char *progname)
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exit(1);
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}
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/* Returns filename if successful or a null pointer if an error occurs */
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static char *
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parseargs(int argc, char *argv[])
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{
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int seed;
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int ch;
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filesize = DEFAULT_FILESIZE;
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blocksize = DEFAULT_BLOCKSIZE;
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count = (int) filesize / blocksize;
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verbose = 0;
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wsync = 0;
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seed = time(NULL);
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test = 0;
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while ((ch = getopt(argc, argv, "b:l:s:c:o:x:vwdrapt")) != EOF) {
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switch(ch) {
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case 'b': blocksize = atoi(optarg); break;
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case 'l': filesize = strtoull(optarg, NULL, 16); break;
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case 's': seed = atoi(optarg); break;
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case 'c': count = atoi(optarg); break;
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case 'o': fileoffset = strtoull(optarg, NULL, 16); break;
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case 'x': extsize = atoi(optarg); break;
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case 'v': verbose++; break;
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case 'w': wsync++; break;
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case 'd': direct++; break;
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case 'r': rt++; direct++; break;
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case 'a': alloconly++; break;
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case 'p': preserve++; break;
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case 't': test++; preserve++; break;
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default: usage(argv[0]); break;
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}
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}
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if (optind != argc - 1)
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usage(argv[0]);
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if ((filesize % blocksize) != 0) {
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filesize -= filesize % blocksize;
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printf("filesize not a multiple of blocksize, reducing filesize to %llu\n",
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(unsigned long long)filesize);
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}
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if ((fileoffset % blocksize) != 0) {
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fileoffset -= fileoffset % blocksize;
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printf("fileoffset not a multiple of blocksize, reducing fileoffset to %llu\n",
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(unsigned long long)fileoffset);
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}
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if (count > (filesize/blocksize)) {
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count = (filesize/blocksize);
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printf("count of blocks written is too large, setting to %d\n",
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count);
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} else if (count < 1) {
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count = 1;
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printf("count of blocks written is too small, setting to %d\n",
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count);
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}
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printf("randholes: Seed = %d (use \"-s %d\" to re-execute this test)\n", seed, seed);
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srandom(seed);
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printf("randholes: blocksize=%d, filesize=%llu, seed=%d\n"
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"randholes: count=%d, offset=%llu, extsize=%d\n",
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blocksize, (unsigned long long)filesize, seed,
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count, (unsigned long long)fileoffset, extsize);
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printf("randholes: verbose=%d, wsync=%d, direct=%d, rt=%d, alloconly=%d, preserve=%d, test=%d\n",
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verbose, wsync, direct ? 1 : 0, rt, alloconly, preserve, test);
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/* Last argument is the file name. Return it. */
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return argv[optind]; /* Success */
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}
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int
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findblock(void)
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{
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@@ -330,68 +400,14 @@ realtime_setup(char *filename, int fd)
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int
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main(int argc, char *argv[])
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{
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int seed, ch, fd, oflags;
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char *filename = NULL;
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int fd, oflags;
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char *filename;
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int r;
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size_t alignment;
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filesize = DEFAULT_FILESIZE;
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blocksize = DEFAULT_BLOCKSIZE;
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count = (int) filesize / blocksize;
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verbose = 0;
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wsync = 0;
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seed = time(NULL);
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test = 0;
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while ((ch = getopt(argc, argv, "b:l:s:c:o:x:vwdrapt")) != EOF) {
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switch(ch) {
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case 'b': blocksize = atoi(optarg); break;
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case 'l': filesize = strtoull(optarg, NULL, 16); break;
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case 's': seed = atoi(optarg); break;
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case 'c': count = atoi(optarg); break;
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case 'o': fileoffset = strtoull(optarg, NULL, 16); break;
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case 'x': extsize = atoi(optarg); break;
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case 'v': verbose++; break;
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case 'w': wsync++; break;
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case 'd': direct++; break;
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case 'r': rt++; direct++; break;
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case 'a': alloconly++; break;
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case 'p': preserve++; break;
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case 't': test++; preserve++; break;
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default: usage(argv[0]); break;
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}
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}
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if (optind == argc-1)
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filename = argv[optind];
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else
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usage(argv[0]);
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if ((filesize % blocksize) != 0) {
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filesize -= filesize % blocksize;
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printf("filesize not a multiple of blocksize, reducing filesize to %llu\n",
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(unsigned long long)filesize);
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}
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if ((fileoffset % blocksize) != 0) {
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fileoffset -= fileoffset % blocksize;
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printf("fileoffset not a multiple of blocksize, reducing fileoffset to %llu\n",
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(unsigned long long)fileoffset);
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}
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if (count > (filesize/blocksize)) {
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count = (filesize/blocksize);
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printf("count of blocks written is too large, setting to %d\n",
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count);
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} else if (count < 1) {
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count = 1;
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printf("count of blocks written is too small, setting to %d\n",
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count);
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}
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printf("randholes: Seed = %d (use \"-s %d\" to re-execute this test)\n", seed, seed);
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srandom(seed);
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printf("randholes: blocksize=%d, filesize=%llu, seed=%d\n"
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"randholes: count=%d, offset=%llu, extsize=%d\n",
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blocksize, (unsigned long long)filesize, seed,
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count, (unsigned long long)fileoffset, extsize);
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printf("randholes: verbose=%d, wsync=%d, direct=%d, rt=%d, alloconly=%d, preserve=%d, test=%d\n",
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verbose, wsync, direct ? 1 : 0, rt, alloconly, preserve, test);
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filename = parseargs(argc, argv);
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if (! filename)
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return 1;
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/*
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* Open the file, write rand block in random places, read them all
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