diff options
| author | Thomas Weißschuh <thomas.weissschuh@linutronix.de> | 2025-07-04 15:43:13 +0200 |
|---|---|---|
| committer | Thomas Weißschuh <linux@weissschuh.net> | 2025-07-06 11:02:40 +0200 |
| commit | 4a40129087a4c32135bb1177a57bbbe6ee646f1a (patch) | |
| tree | 5d33f393134161c99bca94f40b5205ee61b96fff /tools/include | |
| parent | selftests/nolibc: create /dev/full when running as PID 1 (diff) | |
| download | linux-4a40129087a4c32135bb1177a57bbbe6ee646f1a.tar.gz linux-4a40129087a4c32135bb1177a57bbbe6ee646f1a.zip | |
selftests/nolibc: correctly report errors from printf() and friends
When an error is encountered by printf() it needs to be reported.
errno() is already set by the callback.
sprintf() is different, but that keeps working and is already tested.
Also add a new test.
Fixes: 7e4346f4a3a6 ("tools/nolibc/stdio: add a minimal [vf]printf() implementation")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250704-nolibc-printf-error-v1-2-74b7a092433b@linutronix.de
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/nolibc/stdio.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/include/nolibc/stdio.h b/tools/include/nolibc/stdio.h index c470d334ef3f..7630234408c5 100644 --- a/tools/include/nolibc/stdio.h +++ b/tools/include/nolibc/stdio.h @@ -358,11 +358,11 @@ int __nolibc_printf(__nolibc_printf_cb cb, intptr_t state, size_t n, const char n -= w; while (width-- > w) { if (cb(state, " ", 1) != 0) - break; + return -1; written += 1; } if (cb(state, outstr, w) != 0) - break; + return -1; } written += len; |