15 Oct
2015
15 Oct
'15
12:57 p.m.
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- Log -----------------------------------------------------------------
commit dfa593d4d881116723a4401b466ea964fb12327b
Author: Bartosz Golaszewski <bartekgola(a)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(a)gmail.com>
commit b8cfcb3f9b565100c24b0f8de1e31a45dc4370a5
Author: Bartosz Golaszewski <bartekgola(a)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(a)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(a)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(a)codepoet.org>
+ * Copyright (C) 2015 Bartosz Golaszewski <bartekgola(a)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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