From: Adhemerval Zanella via Libc-alpha <libc-alpha@sourceware.org>
To: libc-alpha@sourceware.org
Subject: [PATCH 02/30] linux: Consolidate dl-origin.c
Date: Wed, 19 Oct 2022 19:14:05 -0300 [thread overview]
Message-ID: <20221019221433.1082017-3-adhemerval.zanella@linaro.org> (raw)
In-Reply-To: <20221019221433.1082017-1-adhemerval.zanella@linaro.org>
Use the generic implementation as the default, since the syscall
is supported by all architectures.
Also cleanup some headers and remove the INTERNAL_SYSCALL_ERROR_P
usage (the INTERNAL_SYSCALL_CALL macro already returns an negative
value if an error occurs).
---
sysdeps/unix/sysv/linux/dl-origin.c | 14 ++--
sysdeps/unix/sysv/linux/generic/dl-origin.c | 79 ---------------------
2 files changed, 5 insertions(+), 88 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/generic/dl-origin.c
diff --git a/sysdeps/unix/sysv/linux/dl-origin.c b/sysdeps/unix/sysv/linux/dl-origin.c
index 9a76c78648..2fd1e5f400 100644
--- a/sysdeps/unix/sysv/linux/dl-origin.c
+++ b/sysdeps/unix/sysv/linux/dl-origin.c
@@ -17,15 +17,11 @@
<https://www.gnu.org/licenses/>. */
#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/param.h>
+#include <dl-dst.h>
+#include <fcntl.h>
#include <ldsodefs.h>
#include <sysdep.h>
-#include <dl-dst.h>
-
/* On Linux >= 2.1 systems which have the dcache implementation we can get
the path of the application from the /proc/self/exe symlink. Try this
first and fall back on the generic method if necessary. */
@@ -37,9 +33,9 @@ _dl_get_origin (void)
char *result;
int len;
- len = INTERNAL_SYSCALL_CALL (readlink, "/proc/self/exe", linkval,
- sizeof (linkval));
- if (! INTERNAL_SYSCALL_ERROR_P (len) && len > 0 && linkval[0] != '[')
+ len = INTERNAL_SYSCALL_CALL (readlinkat, AT_FDCWD, "/proc/self/exe",
+ linkval, sizeof (linkval));
+ if (len > 0 && linkval[0] != '[')
{
/* We can use this value. */
assert (linkval[0] == '/');
diff --git a/sysdeps/unix/sysv/linux/generic/dl-origin.c b/sysdeps/unix/sysv/linux/generic/dl-origin.c
deleted file mode 100644
index ed3ac3570c..0000000000
--- a/sysdeps/unix/sysv/linux/generic/dl-origin.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/* Find path of executable.
- Copyright (C) 1998-2022 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 <assert.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/param.h>
-#include <ldsodefs.h>
-#include <sysdep.h>
-
-#include <dl-dst.h>
-
-/* On Linux >= 2.1 systems which have the dcache implementation we can get
- the path of the application from the /proc/self/exe symlink. Try this
- first and fall back on the generic method if necessary. */
-
-const char *
-_dl_get_origin (void)
-{
- char linkval[PATH_MAX];
- char *result;
- int len;
-
- len = INTERNAL_SYSCALL_CALL (readlinkat, AT_FDCWD, "/proc/self/exe",
- linkval, sizeof (linkval));
- if (! INTERNAL_SYSCALL_ERROR_P (len) && len > 0 && linkval[0] != '[')
- {
- /* We can use this value. */
- assert (linkval[0] == '/');
- while (len > 1 && linkval[len - 1] != '/')
- --len;
- result = (char *) malloc (len + 1);
- if (result == NULL)
- result = (char *) -1;
- else if (len == 1)
- memcpy (result, "/", 2);
- else
- *((char *) __mempcpy (result, linkval, len - 1)) = '\0';
- }
- else
- {
- result = (char *) -1;
- /* We use the environment variable LD_ORIGIN_PATH. If it is set make
- a copy and strip out trailing slashes. */
- if (GLRO(dl_origin_path) != NULL)
- {
- size_t len = strlen (GLRO(dl_origin_path));
- result = (char *) malloc (len + 1);
- if (result == NULL)
- result = (char *) -1;
- else
- {
- char *cp = __mempcpy (result, GLRO(dl_origin_path), len);
- while (cp > result + 1 && cp[-1] == '/')
- --cp;
- *cp = '\0';
- }
- }
- }
-
- return result;
-}
--
2.34.1
next prev parent reply other threads:[~2022-10-19 22:15 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 22:14 [PATCH 00/30] Remove Linux generic sysdep Adhemerval Zanella via Libc-alpha
2022-10-19 22:14 ` [PATCH 01/30] linux: Fix generic struct_stat for 64 bit time (BZ# 29657) Adhemerval Zanella via Libc-alpha
2022-10-25 17:50 ` Joseph Myers
2022-12-05 16:39 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` Adhemerval Zanella via Libc-alpha [this message]
2022-10-19 22:14 ` [PATCH 03/30] Linux: consolidate chmod implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:39 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 04/30] Linux: consolidate chown implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 05/30] Linux: consolidate dup2 implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 06/30] Lninux: consolidate epoll_create implementation Adhemerval Zanella via Libc-alpha
2022-10-21 8:57 ` Florian Weimer via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 07/30] Linux: consolidate inotify_init implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 08/30] Linux: consolidate lchown implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 09/30] Linux: consolidate link implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:39 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 10/30] Linux: consolidate mkdir implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 11/30] Linux: consolidate readlink implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:39 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 12/30] Linux: consolidate rmdir implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:39 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 13/30] Linux: consolidate symlink implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 14/30] Linux: consolidate unlink implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 15/30] Linux: consolidate sendfile implementation Adhemerval Zanella via Libc-alpha
2022-12-05 16:39 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 16/30] Linux: Move wordsize-32 Version to default Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-12-07 0:10 ` Joseph Myers
2022-12-07 20:19 ` Adhemerval Zanella Netto via Libc-alpha
2022-10-19 22:14 ` [PATCH 17/30] Linux: consolidate ____longjmp_chk Adhemerval Zanella via Libc-alpha
2022-12-05 16:40 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 18/30] Linux: Assume and consolidate bind wire-up syscall Adhemerval Zanella via Libc-alpha
2022-12-05 16:39 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 19/30] Linux: Assume iand consolidate socket " Adhemerval Zanella via Libc-alpha
2022-12-05 16:39 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 20/30] Linux: Assume and consolidate socketpair " Adhemerval Zanella via Libc-alpha
2022-12-06 16:15 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 21/30] Linux: Assume and consolidate listen " Adhemerval Zanella via Libc-alpha
2022-12-06 16:17 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 22/30] Linux: Assume and consolidate getsockname " Adhemerval Zanella via Libc-alpha
2022-10-20 0:01 ` Joseph Myers
2022-10-20 18:12 ` Adhemerval Zanella Netto via Libc-alpha
2022-12-06 16:18 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 23/30] Linux: Assume and consolidate getpeername " Adhemerval Zanella via Libc-alpha
2022-10-20 0:02 ` Joseph Myers
2022-12-06 16:20 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 24/30] Linux: Assume and consolidate shutdown " Adhemerval Zanella via Libc-alpha
2022-12-06 16:23 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 25/30] Linux: Remove unused generic Makefile Adhemerval Zanella via Libc-alpha
2022-12-06 17:24 ` Carlos O'Donell via Libc-alpha
2022-12-07 21:19 ` Adhemerval Zanella Netto via Libc-alpha
2022-10-19 22:14 ` [PATCH 26/30] Linux: Remove generic sysdep Adhemerval Zanella via Libc-alpha
2022-12-06 17:29 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 27/30] Linux: make generic xstatver.h the default one Adhemerval Zanella via Libc-alpha
2022-12-06 17:33 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 28/30] Linux: Make generic fcntl.h " Adhemerval Zanella via Libc-alpha
2022-12-06 17:36 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 29/30] Linux: Consolidate typesizes.h Adhemerval Zanella via Libc-alpha
2022-12-06 17:47 ` Carlos O'Donell via Libc-alpha
2022-10-19 22:14 ` [PATCH 30/30] Linux: Remove generic Implies Adhemerval Zanella via Libc-alpha
2022-12-06 17:50 ` Carlos O'Donell via Libc-alpha
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