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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>
Add copyright headers
2017-05-22 20:14:52 +03:00
* Copyright (c) 2014-2017 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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
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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