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strace/readlink.c

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Add copyright headers to some files which lack them Before this change, all files that exist since 20th century had copyright headers, while most files that appeared later didn't. This change fixes the inconsistency by adding missing copyright headers. It doesn't mean that copyright headers became maintained. In my view, git history provides much better information on this subject and is much more accurate than copyright headers.
2015-12-17 20:56:48 +03:00
/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* Copyright (c) 2006 Ulrich Drepper <drepper@redhat.com>
* Copyright (c) 2006 Bernhard Kaindl <bk@suse.de>
* Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org>
Update copyright headers
2018-12-25 02:46:43 +03:00
* Copyright (c) 2014-2018 The strace developers.
Add copyright headers to some files which lack them Before this change, all files that exist since 20th century had copyright headers, while most files that appeared later didn't. This change fixes the inconsistency by adding missing copyright headers. It doesn't mean that copyright headers became maintained. In my view, git history provides much better information on this subject and is much more accurate than copyright headers.
2015-12-17 20:56:48 +03:00
* All rights reserved.
*
Change the license of strace to LGPL-2.1-or-later strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
2018-12-10 03:00:00 +03:00
* SPDX-License-Identifier: LGPL-2.1-or-later
Add copyright headers to some files which lack them Before this change, all files that exist since 20th century had copyright headers, while most files that appeared later didn't. This change fixes the inconsistency by adding missing copyright headers. It doesn't mean that copyright headers became maintained. In my view, git history provides much better information on this subject and is much more accurate than copyright headers.
2015-12-17 20:56:48 +03:00
*/
file.c: move readlink and readlinkat parsers to a separate file * readlink.c: New file. * Makefile.am (strace_SOURCES): Add it. * file.c (decode_readlink, sys_readlink, sys_readlinkat): Move to readlink.c.
2014-12-06 06:53:16 +03:00
#include "defs.h"
static int
decode_readlink(struct tcb *tcp, int offset)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[offset]);
tprints(", ");
} else {
if (syserror(tcp))
readlink.c: use printaddr * readlink.c (decode_readlink): Use printaddr.
2015-07-17 20:24:41 +03:00
printaddr(tcp->u_arg[offset + 1]);
file.c: move readlink and readlinkat parsers to a separate file * readlink.c: New file. * Makefile.am (strace_SOURCES): Add it. * file.c (decode_readlink, sys_readlink, sys_readlinkat): Move to readlink.c.
2014-12-06 06:53:16 +03:00
else
/* Used to use printpathn(), but readlink
* neither includes NUL in the returned count,
* nor actually writes it into memory.
* printpathn() would decide on printing
* "..." continuation based on garbage
* past return buffer's end.
*/
printstr: rename to printstrn, add printstr as a thin wrapper As about half of all printstr uses cases are invocations with the last argument set to -1, create a dedicated function for this use case. * defs.h (printstr): Rename to printstrn. All callers updated. (printstr): New static inline function. All callers updated.
2016-12-20 19:43:26 +03:00
printstrn(tcp, tcp->u_arg[offset + 1], tcp->u_rval);
Automatically replace PRI_kr[dux] with PRI_kl[dux] Remove temporary macros created for transition from long to kernel_ulong_t. Automatically replace PRI_kr[dux] with PRI_kl[dux] using $ git grep -l 'PRI_kr[dux]' | xargs sed -ri 's/PRI_kr([dux])/PRI_kl\1/g' * defs.h (PRI_krd, PRI_kru, PRI_krx): Remove. All users updated.
2016-12-26 13:16:35 +03:00
tprintf(", %" PRI_klu, tcp->u_arg[offset + 2]);
file.c: move readlink and readlinkat parsers to a separate file * readlink.c: New file. * Makefile.am (strace_SOURCES): Add it. * file.c (decode_readlink, sys_readlink, sys_readlinkat): Move to readlink.c.
2014-12-06 06:53:16 +03:00
}
return 0;
}
Declare syscall parsers using SYS_FUNC macro Introduce SYS_FUNC macro to declare and define all syscall parsers. * Makefile.am (BUILT_SOURCES, CLEANFILES): Add sys_func.h. (sys_func.h): New rule. * defs.h (SYS_FUNC_NAME, SYS_FUNC): New macros. * linux/syscall.h: Include "sys_func.h". [NEED_UID16_PARSERS]: Use SYS_FUNC to declare uid16 syscall parsers. Remove other declarations. * linux/alpha/syscallent.h (160, 161): Add sys_ prefix to osf_statfs and osf_fstatfs syscall parsers. * *.c: Use SYS_FUNC to define syscall parsers.
2015-04-07 04:36:50 +03:00
SYS_FUNC(readlink)
file.c: move readlink and readlinkat parsers to a separate file * readlink.c: New file. * Makefile.am (strace_SOURCES): Add it. * file.c (decode_readlink, sys_readlink, sys_readlinkat): Move to readlink.c.
2014-12-06 06:53:16 +03:00
{
return decode_readlink(tcp, 0);
}
Declare syscall parsers using SYS_FUNC macro Introduce SYS_FUNC macro to declare and define all syscall parsers. * Makefile.am (BUILT_SOURCES, CLEANFILES): Add sys_func.h. (sys_func.h): New rule. * defs.h (SYS_FUNC_NAME, SYS_FUNC): New macros. * linux/syscall.h: Include "sys_func.h". [NEED_UID16_PARSERS]: Use SYS_FUNC to declare uid16 syscall parsers. Remove other declarations. * linux/alpha/syscallent.h (160, 161): Add sys_ prefix to osf_statfs and osf_fstatfs syscall parsers. * *.c: Use SYS_FUNC to define syscall parsers.
2015-04-07 04:36:50 +03:00
SYS_FUNC(readlinkat)
file.c: move readlink and readlinkat parsers to a separate file * readlink.c: New file. * Makefile.am (strace_SOURCES): Add it. * file.c (decode_readlink, sys_readlink, sys_readlinkat): Move to readlink.c.
2014-12-06 06:53:16 +03:00
{
if (entering(tcp))
print_dirfd(tcp, tcp->u_arg[0]);
return decode_readlink(tcp, 1);
}
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