From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/stdio/perror.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 src/stdio/perror.c (limited to 'src/stdio/perror.c') diff --git a/src/stdio/perror.c b/src/stdio/perror.c new file mode 100644 index 0000000..d0943f2 --- /dev/null +++ b/src/stdio/perror.c @@ -0,0 +1,30 @@ +#include +#include +#include +#include "stdio_impl.h" + +void perror(const char *msg) +{ + FILE *f = stderr; + char *errstr = strerror(errno); + + FLOCK(f); + + /* Save stderr's orientation and encoding rule, since perror is not + * permitted to change them. */ + void *old_locale = f->locale; + int old_mode = f->mode; + + if (msg && *msg) { + fwrite(msg, strlen(msg), 1, f); + fputc(':', f); + fputc(' ', f); + } + fwrite(errstr, strlen(errstr), 1, f); + fputc('\n', f); + + f->mode = old_mode; + f->locale = old_locale; + + FUNLOCK(f); +} -- cgit v1.2.3