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- Log ----------------------------------------------------------------- commit ea86f1d8885335f2bd38a388d2ab762bd1e29427 Author: Bartosz Golaszewski bartekgola@gmail.com Date: Wed Oct 14 17:14:01 2015 +0200

syncfs: add system call support

Add support for the syncfs() system call.

Signed-off-by: Bartosz Golaszewski bartekgola@gmail.com

commit 24e4dc6660057aa13c8d021f0dacf4f58bdf5245 Author: Bartosz Golaszewski bartekgola@gmail.com Date: Wed Oct 14 17:14:00 2015 +0200

fanotify: add system call support

Add support for fanotify_init() and fanotify_mark() syscalls. The header file is taken from glibc.

Signed-off-by: Bartosz Golaszewski bartekgola@gmail.com

-----------------------------------------------------------------------

Summary of changes: include/unistd.h | 2 +- libc/sysdeps/linux/common/Makefile.in | 1 + libc/sysdeps/linux/common/fanotify.c | 32 ++++++++++++++++++++ libc/sysdeps/linux/common/{getppid.c => syncfs.c} | 10 +++--- .../{x86_64/sys/perm.h => common/sys/fanotify.h} | 25 ++++++++------- 5 files changed, 52 insertions(+), 18 deletions(-) create mode 100644 libc/sysdeps/linux/common/fanotify.c copy libc/sysdeps/linux/common/{getppid.c => syncfs.c} (52%) copy libc/sysdeps/linux/{x86_64/sys/perm.h => common/sys/fanotify.h} (59%)

diff --git a/include/unistd.h b/include/unistd.h index 3793d2d..4701dab 100644 --- a/include/unistd.h +++ b/include/unistd.h @@ -1073,7 +1073,7 @@ extern char *getpass (const char *__prompt) __nonnull ((1)); extern int fsync (int __fd); #endif /* Use BSD || X/Open || Unix98. */

-#if 0 /*def __USE_GNU */ +#if __USE_GNU /* Make all changes done to all files on the file system associated * with FD actually appear on disk. */ extern int syncfs (int __fd) __THROW; diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in index 8252598..b75b712 100644 --- a/libc/sysdeps/linux/common/Makefile.in +++ b/libc/sysdeps/linux/common/Makefile.in @@ -27,6 +27,7 @@ CSRC-$(UCLIBC_LINUX_SPECIFIC) += \ eventfd.c \ eventfd_read.c \ eventfd_write.c \ + fanotify.c \ getrandom.c \ inotify.c \ ioperm.c \ diff --git a/libc/sysdeps/linux/common/fanotify.c b/libc/sysdeps/linux/common/fanotify.c new file mode 100644 index 0000000..431e0e5 --- /dev/null +++ b/libc/sysdeps/linux/common/fanotify.c @@ -0,0 +1,32 @@ +/* vi: set sw=4 ts=4: */ +/* + * fanotify interface for uClibc + * + * Copyright (C) 2015 by Bartosz Golaszewski bartekgola@gmail.com + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <sys/syscall.h> +#include <sys/fanotify.h> + +#ifdef __NR_fanotify_init +_syscall2(int, fanotify_init, unsigned int, flags, unsigned int, event_f_flags) +#endif + +#ifdef __NR_fanotify_mark +# include <bits/wordsize.h> +# include <fcntl.h> + +# if __WORDSIZE == 64 +_syscall5(int, fanotify_mark, int, fanotify_fd, unsigned int, flags, + uint64_t, mask, int, dirfd, const char *, pathname) +# else +int fanotify_mark(int fanotify_fd, unsigned int flags, + uint64_t mask, int dirfd, const char *pathname) +{ + return INLINE_SYSCALL(fanotify_mark, 6, fanotify_fd, flags, + OFF64_HI_LO(mask), dirfd, pathname); +} +# endif +#endif diff --git a/libc/sysdeps/linux/common/getppid.c b/libc/sysdeps/linux/common/syncfs.c similarity index 52% copy from libc/sysdeps/linux/common/getppid.c copy to libc/sysdeps/linux/common/syncfs.c index 9d85661..831f765 100644 --- a/libc/sysdeps/linux/common/getppid.c +++ b/libc/sysdeps/linux/common/syncfs.c @@ -1,15 +1,13 @@ /* vi: set sw=4 ts=4: */ /* - * getppid() for uClibc - * - * Copyright (C) 2000-2006 by Erik Andersen andersen@codepoet.org + * Copyright (C) 2015 Bartosz Golaszewski bartekgola@gmail.com * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */

#include <sys/syscall.h> -#include <unistd.h>

-#ifdef __NR_getppid -_syscall_noerr0(pid_t, getppid) +#if defined(__NR_syncfs) && __USE_GNU +#include <unistd.h> +_syscall1(int, syncfs, int, fd) #endif diff --git a/libc/sysdeps/linux/x86_64/sys/perm.h b/libc/sysdeps/linux/common/sys/fanotify.h similarity index 59% copy from libc/sysdeps/linux/x86_64/sys/perm.h copy to libc/sysdeps/linux/common/sys/fanotify.h index cbfeaf8..5eec3e5 100644 --- a/libc/sysdeps/linux/x86_64/sys/perm.h +++ b/libc/sysdeps/linux/common/sys/fanotify.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1999, 2001 Free Software Foundation, Inc. +/* Copyright (C) 2010-2015 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 @@ -15,21 +15,24 @@ License along with the GNU C Library; if not, see http://www.gnu.org/licenses/. */

-#ifndef _SYS_PERM_H +#ifndef _SYS_FANOTIFY_H +#define _SYS_FANOTIFY_H 1

-#define _SYS_PERM_H 1 -#include <features.h> +#include <stdint.h> +#include <linux/fanotify.h>

-__BEGIN_DECLS

-/* Set port input/output permissions. */ -extern int ioperm (unsigned long int __from, unsigned long int __num, - int __turn_on) __THROW; +__BEGIN_DECLS

+/* Create and initialize fanotify group. */ +extern int fanotify_init (unsigned int __flags, unsigned int __event_f_flags) + __THROW;

-/* Change I/O privilege level. */ -extern int iopl (int __level) __THROW; +/* Add, remove, or modify an fanotify mark on a filesystem object. */ +extern int fanotify_mark (int __fanotify_fd, unsigned int __flags, + uint64_t __mask, int __dfd, const char *__pathname) + __THROW;

__END_DECLS

-#endif /* _SYS_PERM_H */ +#endif /* sys/fanotify.h */

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