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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-05-18 17:41:25 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-07-07 15:02:57 -0300
commit325081b9eb2035f8f025255206889208f330b590 (patch)
tree43a32de8fdd6777e290d7310795b41ea86df12b6 /string
parentbfe05aa289054744b68f136b701705cfd242c4de (diff)
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string: Add strerrorname_np and strerrordesc_np
The strerrorname_np returns error number name (e.g. "EINVAL" for EINVAL) while strerrordesc_np returns string describing error number (e.g "Invalid argument" for EINVAL). Different than strerror, strerrordesc_np does not attempt to translate the return description, both functions return NULL for an invalid error number. They should be used instead of sys_errlist and sys_nerr, both are thread and async-signal safe. These functions are GNU extensions. Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, and s390x-linux-gnu. Tested-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'string')
-rw-r--r--string/Makefile3
-rw-r--r--string/Versions1
-rw-r--r--string/strerrordesc_np.c26
-rw-r--r--string/strerrorname_np.c25
-rw-r--r--string/string.h7
5 files changed, 61 insertions, 1 deletions
diff --git a/string/Makefile b/string/Makefile
index 8fe7e17..f8d3104 100644
--- a/string/Makefile
+++ b/string/Makefile
@@ -45,7 +45,8 @@ routines := strcat strchr strcmp strcoll strcpy strcspn \
envz basename \
strcoll_l strxfrm_l string-inlines memrchr \
xpg-strerror strerror_l explicit_bzero \
- sigdescr_np sigabbrev_np
+ sigdescr_np sigabbrev_np strerrorname_np \
+ strerrordesc_np
strop-tests := memchr memcmp memcpy memmove mempcpy memset memccpy \
stpcpy stpncpy strcat strchr strcmp strcpy strcspn \
diff --git a/string/Versions b/string/Versions
index 6f8dd2d..298ecd4 100644
--- a/string/Versions
+++ b/string/Versions
@@ -87,5 +87,6 @@ libc {
}
GLIBC_2.32 {
sigdescr_np; sigabbrev_np;
+ strerrordesc_np; strerrorname_np;
}
}
diff --git a/string/strerrordesc_np.c b/string/strerrordesc_np.c
new file mode 100644
index 0000000..cdaf3a7
--- /dev/null
+++ b/string/strerrordesc_np.c
@@ -0,0 +1,26 @@
+/* Return string describing error number.
+ Copyright (C) 2020 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+
+const char *
+__strerrordesc_np (int errnum)
+{
+ return __get_errlist (errnum);
+}
+weak_alias (__strerrordesc_np, strerrordesc_np)
diff --git a/string/strerrorname_np.c b/string/strerrorname_np.c
new file mode 100644
index 0000000..bc337d2
--- /dev/null
+++ b/string/strerrorname_np.c
@@ -0,0 +1,25 @@
+/* Return string describing errno name.
+ Copyright (C) 2020 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+
+const char *
+strerrorname_np (int errnum)
+{
+ return __get_errname (errnum);
+}
diff --git a/string/string.h b/string/string.h
index 0119d7f..b0be00c 100644
--- a/string/string.h
+++ b/string/string.h
@@ -428,6 +428,13 @@ extern int __xpg_strerror_r (int __errnum, char *__buf, size_t __buflen)
extern char *strerror_r (int __errnum, char *__buf, size_t __buflen)
__THROW __nonnull ((2)) __wur __attr_access ((__write_only__, 2, 3));
# endif
+
+# ifdef __USE_GNU
+/* Return a string describing the meaning of tthe error in ERR. */
+extern const char *strerrordesc_np (int __err) __THROW;
+/* Return a string with the error name in ERR. */
+extern const char *strerrorname_np (int __err) __THROW;
+# endif
#endif
#ifdef __USE_XOPEN2K8