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authorShehjar Tikoo <shehjart@zresearch.com>2009-05-05 16:03:52 +0530
committerAnand V. Avati <avati@amp.gluster.com>2009-05-05 17:50:47 +0530
commit938191c57f0ef3a657a764033f70df6595dc736c (patch)
treed4737287e94a6731ed4498b8553a6d9a30ffe4b2
parentcec18ef672700dea563a8c899170ece4730257e5 (diff)
booster: Add stat API
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
-rw-r--r--booster/src/Makefile.am2
-rw-r--r--booster/src/booster.c98
-rw-r--r--booster/src/booster_stat.c55
3 files changed, 153 insertions, 2 deletions
diff --git a/booster/src/Makefile.am b/booster/src/Makefile.am
index 9b6e77f957d..1b3be737ee5 100644
--- a/booster/src/Makefile.am
+++ b/booster/src/Makefile.am
@@ -2,7 +2,7 @@ xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/performance
ldpreload_PROGRAMS = glusterfs-booster.so
ldpreloaddir = $(libdir)/glusterfs/
-glusterfs_booster_so_SOURCES = booster.c
+glusterfs_booster_so_SOURCES = booster.c booster_stat.c
glusterfs_booster_so_CFLAGS = -I$(top_srcdir)/libglusterfsclient/src/ -D_GNU_SOURCE -D$(GF_HOST_OS) -fPIC -Wall \
-pthread $(GF_BOOSTER_CFLAGS)
glusterfs_booster_so_CPPFLAGS = -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE \
diff --git a/booster/src/booster.c b/booster/src/booster.c
index ef866cb891c..2c2ff0c964b 100644
--- a/booster/src/booster.c
+++ b/booster/src/booster.c
@@ -24,7 +24,6 @@
#include <dlfcn.h>
#include <sys/types.h>
-#include <sys/stat.h>
#include <sys/uio.h>
#include <stdio.h>
#include <stdarg.h>
@@ -171,6 +170,10 @@ static char * (*real_realpath) (const char *path, char *resolved);
static DIR * (*real_opendir) (const char *path);
static struct dirent * (*real_readdir) (DIR *dir);
static int (*real_closedir) (DIR *dh);
+static int (*real___xstat) (int ver, const char *path, struct stat *buf);
+static int (*real___xstat64) (int ver, const char *path, struct stat64 *buf);
+static int (*real_stat) (const char *path, struct stat *buf);
+static int (*real_stat64) (const char *path, struct stat64 *buf);
#define RESOLVE(sym) do { \
if (!real_##sym) \
@@ -1597,6 +1600,95 @@ out:
return ret;
}
+/* The real stat functions reside in booster_stat.c to
+ * prevent clash with the statX prototype and functions
+ * declared from sys/stat.h
+ */
+int
+booster_xstat (int ver, const char *path, void *buf)
+{
+ struct stat *sbuf = (struct stat *)buf;
+ int ret = -1;
+
+ ret = glusterfs_stat (path, sbuf);
+ if (((ret == -1) && (errno != ENODEV)) || (ret == 0))
+ goto out;
+
+ if (real___xstat == NULL) {
+ ret = -1;
+ errno = ENOSYS;
+ goto out;
+ }
+
+ ret = real___xstat (ver, path, sbuf);
+out:
+ return ret;
+}
+
+int
+booster_xstat64 (int ver, const char *path, void *buf)
+{
+ int ret = -1;
+ struct stat64 *sbuf = (struct stat64 *)buf;
+
+ ret = glusterfs_stat (path, (struct stat *)sbuf);
+ if (((ret == -1) && (errno != ENODEV)) || (ret == 0))
+ goto out;
+
+ if (real___xstat64 == NULL) {
+ errno = ENOSYS;
+ ret = -1;
+ goto out;
+ }
+
+ ret = real___xstat64 (ver, path, sbuf);
+out:
+ return ret;
+}
+
+int
+booster_stat (const char *path, void *buf)
+{
+ struct stat *sbuf = (struct stat *)buf;
+ int ret = -1;
+
+ ret = glusterfs_stat (path, sbuf);
+ if (((ret == -1) && (errno != ENODEV)) || (ret == 0))
+ goto out;
+
+ if (real_stat == NULL) {
+ errno = ENOSYS;
+ ret = -1;
+ goto out;
+ }
+
+ ret = real_stat (path, sbuf);
+
+out:
+ return ret;
+}
+
+int
+booster_stat64 (const char *path, void *buf)
+{
+ int ret = -1;
+ struct stat64 *sbuf = (struct stat64 *)buf;
+
+ ret = glusterfs_stat (path, (struct stat *)sbuf);
+ if (((ret == -1) && (errno != ENODEV)) || (ret == 0))
+ goto out;
+
+ if (real_stat64 == NULL) {
+ errno = ENOSYS;
+ ret = -1;
+ goto out;
+ }
+
+ ret = real_stat64 (path, sbuf);
+out:
+ return ret;
+}
+
pid_t
fork (void)
{
@@ -1667,6 +1759,10 @@ _init (void)
RESOLVE (opendir);
RESOLVE (readdir);
RESOLVE (closedir);
+ RESOLVE (__xstat);
+ RESOLVE (__xstat64);
+ RESOLVE (stat);
+ RESOLVE (stat64);
/* This must be called after resolving real functions
* above so that the socket based IO calls in libglusterfsclient
diff --git a/booster/src/booster_stat.c b/booster/src/booster_stat.c
new file mode 100644
index 00000000000..cdf9230e6c2
--- /dev/null
+++ b/booster/src/booster_stat.c
@@ -0,0 +1,55 @@
+/*
+ Copyright (c) 2007-2009 Z RESEARCH, Inc. <http://www.zresearch.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+
+extern int
+booster_stat (const char *path, void *buf);
+
+extern int
+booster_stat64 (const char *path, void *buf);
+
+extern int
+booster_xstat (int ver, const char *path, void *buf);
+
+extern int
+booster_xstat64 (int ver, const char *path, void *buf);
+
+int
+stat (const char *path, void *buf)
+{
+ return booster_stat (path, buf);
+}
+
+int
+stat64 (const char *path, void *buf)
+{
+ return booster_stat64 (path, buf);
+}
+
+int
+__xstat (int ver, const char *path, void *buf)
+{
+ return booster_xstat (ver, path, buf);
+}
+
+int
+__xstat64 (int ver, const char *path, void *buf)
+{
+ return booster_xstat64 (ver, path, buf);
+}