diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:47:53 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:47:53 +0000 |
commit | c8bae7493d2f2910b57f13ded012e86bdcfb0532 (patch) | |
tree | 24e09d9f84dec336720cf393e156089ca2835791 /t/helper/test-genzeros.c | |
parent | Initial commit. (diff) | |
download | git-17a789943131483bc454986d1be6da6caaabce8c.tar.xz git-17a789943131483bc454986d1be6da6caaabce8c.zip |
Adding upstream version 1:2.39.2.upstream/1%2.39.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 't/helper/test-genzeros.c')
-rw-r--r-- | t/helper/test-genzeros.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/t/helper/test-genzeros.c b/t/helper/test-genzeros.c new file mode 100644 index 0000000..8ca988d --- /dev/null +++ b/t/helper/test-genzeros.c @@ -0,0 +1,34 @@ +#include "test-tool.h" +#include "git-compat-util.h" + +int cmd__genzeros(int argc, const char **argv) +{ + /* static, so that it is NUL-initialized */ + static const char zeros[256 * 1024]; + intmax_t count; + ssize_t n; + + if (argc > 2) { + fprintf(stderr, "usage: %s [<count>]\n", argv[0]); + return 1; + } + + count = argc > 1 ? strtoimax(argv[1], NULL, 0) : -1; + + /* Writing out individual NUL bytes is slow... */ + while (count < 0) + if (write(1, zeros, ARRAY_SIZE(zeros)) < 0) + return -1; + + while (count > 0) { + n = write(1, zeros, count < ARRAY_SIZE(zeros) ? + count : ARRAY_SIZE(zeros)); + + if (n < 0) + return -1; + + count -= n; + } + + return 0; +} |