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| author | Benjamin Berg <benjamin.berg@intel.com> | 2025-09-24 17:20:50 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-11 17:21:17 +0300 |
| commit | 6135d225cca7dc04031145207cd1c39d7117cd4e (patch) | |
| tree | 12547cbde7e59942b620887ba2671d349b1977fd /tools/include | |
| parent | 2d3e5c1e76e9a9e9267b3038964cb589bf050db5 (diff) | |
| download | linux-6135d225cca7dc04031145207cd1c39d7117cd4e.tar.xz | |
tools/nolibc/stdio: let perror work when NOLIBC_IGNORE_ERRNO is set
[ Upstream commit c485ca3aff2442adea4c08ceb5183e671ebed22a ]
There is no errno variable when NOLIBC_IGNORE_ERRNO is defined. As such,
simply print the message with "unknown error" rather than the integer
value of errno.
Fixes: acab7bcdb1bc ("tools/nolibc/stdio: add perror() to report the errno value")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/nolibc/stdio.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/include/nolibc/stdio.h b/tools/include/nolibc/stdio.h index cae402c11e57..36952314eef6 100644 --- a/tools/include/nolibc/stdio.h +++ b/tools/include/nolibc/stdio.h @@ -352,7 +352,11 @@ int printf(const char *fmt, ...) static __attribute__((unused)) void perror(const char *msg) { +#ifdef NOLIBC_IGNORE_ERRNO + fprintf(stderr, "%s%sunknown error\n", (msg && *msg) ? msg : "", (msg && *msg) ? ": " : ""); +#else fprintf(stderr, "%s%serrno=%d\n", (msg && *msg) ? msg : "", (msg && *msg) ? ": " : "", errno); +#endif } static __attribute__((unused)) |