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linux: Add fanotify_mark C implementation

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Passing 64-bit arguments on syscalls.list is tricky: it requires
to reimplement the expected kernel abi in each architecture.  This
is way to better to represent in C code where we already have
macros for this (SYSCALL_LL64).

Checked on x86_64-linux-gnu.
This commit is contained in:
Adhemerval Zanella 2020-06-11 16:49:40 -03:00
parent c3b023a782
commit d150181d73
18 changed files with 42 additions and 22 deletions
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3
sysdeps/unix/sysv/linux/Makefile
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@ -66,7 +66,8 @@ sysdep_routines += adjtimex clone umount umount2 readahead sysctl \
fxstatat fxstatat64 \
xmknod xmknodat convert_scm_timestamps \
closefrom_fallback \
clone3 clone-internal
clone3 clone-internal \
fanotify_mark \
CFLAGS-gethostid.c = -fexceptions
CFLAGS-tee.c = -fexceptions -fasynchronous-unwind-tables

2
sysdeps/unix/sysv/linux/arm/syscalls.list
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@ -17,8 +17,6 @@ setfsuid - setfsuid32 Ei:i setfsuid
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark
personality EXTRA personality Ei:i __personality personality
# proper socket implementations:

36
sysdeps/unix/sysv/linux/fanotify_mark.c Normal file
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@ -0,0 +1,36 @@
/* Add, remove, or modify an fanotify mark on a filesystem object.
Linux specific syscall.
Copyright (C) 2021 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 <sys/fanotify.h>
#include <sysdep.h>
int
__fanotify_mark (int fd, unsigned int flags, uint64_t mask, int dirfd,
const char *pathname)
{
return INLINE_SYSCALL_CALL (fanotify_mark, fd, flags, SYSCALL_LL64 (mask),
dirfd, pathname);
}
#ifdef VERSION_fanotify_mark
# include <shlib-compat.h>
versioned_symbol (libc, __fanotify_mark, fanotify_mark,
VERSION_fanotify_mark);
#else
weak_alias (__fanotify_mark, fanotify_mark)
#endif

1
sysdeps/unix/sysv/linux/generic/wordsize-32/syscalls.list
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@ -2,4 +2,3 @@
# rlimit APIs
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark

2
sysdeps/unix/sysv/linux/hppa/fanotify_mark.c Normal file
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@ -0,0 +1,2 @@
#define VERSION_fanotify_mark GLIBC_2_19
#include <sysdeps/unix/sysv/linux/fanotify_mark.c>

1
sysdeps/unix/sysv/linux/hppa/syscalls.list
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@ -10,5 +10,4 @@ socket - socket i:iii __socket socket
socketpair - socketpair i:iiif __socketpair socketpair
prlimit64 EXTRA prlimit64 i:iipp __prlimit64 prlimit64@@GLIBC_2.17
fanotify_mark EXTRA fanotify_mark i:iiiiis __fanotify_mark fanotify_mark@@GLIBC_2.19
personality EXTRA personality Ei:i __personality personality

2
sysdeps/unix/sysv/linux/i386/syscalls.list
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@ -21,6 +21,4 @@ vm86 - vm86 i:ip __vm86 vm86@@GLIBC_2.3.4
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark
personality EXTRA personality Ei:i __personality personality

1
sysdeps/unix/sysv/linux/m68k/syscalls.list
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@ -17,5 +17,4 @@ setfsuid - setfsuid32 Ei:i setfsuid
cacheflush EXTRA cacheflush i:iiii __cacheflush cacheflush
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark
personality EXTRA personality Ei:i __personality personality

1
sysdeps/unix/sysv/linux/microblaze/syscalls.list
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@ -3,5 +3,4 @@
cacheflush EXTRA cacheflush i:iiii __cacheflush cacheflush
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark
personality EXTRA personality Ei:i __personality personality

2
sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
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@ -1,5 +1,3 @@
# File name Caller Syscall name # args Strong name Weak names
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark

2
sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list
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@ -6,6 +6,4 @@ lseek64 - lseek i:iii __lseek64 __libc_lseek64 lseek64@@GLIBC_2.2 llseek@GLIBC
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiis fanotify_mark
personality EXTRA personality Ei:i __personality personality

2
sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
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@ -2,6 +2,4 @@
prlimit EXTRA prlimit64 i:iipp prlimit prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiis fanotify_mark
sendfile - sendfile i:iipi sendfile sendfile64

1
sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
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@ -4,4 +4,3 @@ chown - chown i:sii __chown chown@@GLIBC_2.1
lchown - lchown i:sii __lchown lchown@@GLIBC_2.0 chown@GLIBC_2.0
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark

1
sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
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@ -16,5 +16,4 @@ setfsgid - setfsgid32 Ei:i setfsgid
setfsuid - setfsuid32 Ei:i setfsuid
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark
personality EXTRA personality Ei:i __personality personality

2
sysdeps/unix/sysv/linux/sh/fanotify_mark.c Normal file
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@ -0,0 +1,2 @@
#define VERSION_fanotify_mark GLIBC_2_16
#include <sysdeps/unix/sysv/linux/fanotify_mark.c>

2
sysdeps/unix/sysv/linux/sh/syscalls.list
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@ -17,6 +17,4 @@ setfsuid - setfsuid32 Ei:i setfsuid
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis __fanotify_mark fanotify_mark@@GLIBC_2.16
personality EXTRA personality Ei:i __personality personality

1
sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
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@ -16,4 +16,3 @@ setfsgid - setfsgid32 Ei:i setfsgid
setfsuid - setfsuid32 Ei:i setfsuid
prlimit64 EXTRA prlimit64 i:iipp prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiiis fanotify_mark

2
sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
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@ -2,6 +2,4 @@
sendfile - sendfile i:iipi sendfile sendfile64
prlimit EXTRA prlimit64 i:iipp prlimit prlimit64
fanotify_mark EXTRA fanotify_mark i:iiiis fanotify_mark
personality EXTRA personality i:i __personality personality