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authorManuel Novoa III <mjn3@codepoet.org>2004-02-11 23:48:50 +0000
committerManuel Novoa III <mjn3@codepoet.org>2004-02-11 23:48:50 +0000
commit082e680bd54e999f2bb4eb77141958938b1e9ee9 (patch)
tree203c45b85ca608e1550d8ffc459456fc9cf0b30b /libc/stdio/perror.c
parent17c21765b4a97c6f0b74ba8466073e5a3f97cdee (diff)
New stdio core. Should be more maintainable. Fixes a couple of bugs.
Codepaths streamlined. Improved performance for nonthreaded apps when linked with a thread-enabled libc. Minor iconv bug and some locale/thread related startup issues fixed. These showed up in getting a gcj-compiled java helloworld app running. Removed some old extension functions... _stdio_fdout and _stdio_fsfopen.
Diffstat (limited to 'libc/stdio/perror.c')
-rw-r--r--libc/stdio/perror.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/libc/stdio/perror.c b/libc/stdio/perror.c
new file mode 100644
index 000000000..83db7689f
--- /dev/null
+++ b/libc/stdio/perror.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
+ *
+ * GNU Library General Public License (LGPL) version 2 or later.
+ *
+ * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
+ */
+
+#include "_stdio.h"
+
+#ifdef __UCLIBC_MJN3_ONLY__
+#warning CONSIDER: Increase buffer size for error message (non-%m case)?
+#endif
+
+void perror(register const char *s)
+{
+ /* If the program is calling perror, it's a safe bet that printf and
+ * friends are used as well. It is also possible that the calling
+ * program could buffer stderr, or reassign it. */
+
+ register const char *sep;
+
+ sep = ": ";
+ if (!(s && *s)) { /* Caller did not supply a prefix message */
+ s = (sep += 2); /* or passed an empty string. */
+ }
+
+#ifdef __UCLIBC_HAS_PRINTF_M_SPEC__
+ fprintf(stderr, "%s%s%m\n", s, sep); /* Use the gnu %m feature. */
+#else
+ {
+ char buf[64];
+ fprintf(stderr, "%s%s%s\n", s, sep,
+ _glibc_strerror_r(errno, buf, sizeof(buf)));
+ }
+#endif
+}