diff options
Diffstat (limited to 't/helper/test-path-utils.c')
| -rw-r--r-- | t/helper/test-path-utils.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/t/helper/test-path-utils.c b/t/helper/test-path-utils.c index 30211d6d64..6efde6f5ba 100644 --- a/t/helper/test-path-utils.c +++ b/t/helper/test-path-utils.c @@ -303,6 +303,27 @@ int cmd__path_utils(int argc, const char **argv) return !!res; } + if (argc == 4 && !strcmp(argv[1], "skip-n-bytes")) { + int fd = open(argv[2], O_RDONLY), offset = atoi(argv[3]); + char buffer[65536]; + + if (fd < 0) + die_errno("could not open '%s'", argv[2]); + if (lseek(fd, offset, SEEK_SET) < 0) + die_errno("could not skip %d bytes", offset); + for (;;) { + ssize_t count = read(fd, buffer, sizeof(buffer)); + if (count < 0) + die_errno("could not read '%s'", argv[2]); + if (!count) + break; + if (write(1, buffer, count) < 0) + die_errno("could not write to stdout"); + } + close(fd); + return 0; + } + fprintf(stderr, "%s: unknown function name: %s\n", argv[0], argv[1] ? argv[1] : "(there was none)"); return 1; |