UPDATE:
- refactor ifdefs to platform_ functions
For what fsr needs, mntinfo can be used instead of mntent on some
platforms. Exctract the platform-specific code to platform headers.
Signed-off-by: Jan Tulak <jtulak@xxxxxxxxxx>
---
fsr/Makefile | 8 ++++
fsr/xfs_fsr.c | 127 +++++++++++++++++++++++++++++++-------------------
include/darwin.h | 64 +++++++++++++++++++++++++
include/freebsd.h | 32 +++++++++++++
include/gnukfreebsd.h | 31 ++++++++++++
include/irix.h | 32 +++++++++++++
include/linux.h | 31 ++++++++++++
7 files changed, 276 insertions(+), 49 deletions(-)
diff --git a/fsr/Makefile b/fsr/Makefile
index a9d1bf6..d3521b2 100644
--- a/fsr/Makefile
+++ b/fsr/Makefile
@@ -9,6 +9,14 @@ LTCOMMAND = xfs_fsr
CFILES = xfs_fsr.c
LLDLIBS = $(LIBHANDLE)
+ifeq ($(HAVE_GETMNTENT),yes)
+LCFLAGS += -DHAVE_GETMNTENT
+endif
+
+ifeq ($(HAVE_GETMNTINFO),yes)
+LCFLAGS += -DHAVE_GETMNTINFO
+endif
+
default: depend $(LTCOMMAND)
include $(BUILDRULES)
diff --git a/fsr/xfs_fsr.c b/fsr/xfs_fsr.c
index c8ef18f..d7087d4 100644
--- a/fsr/xfs_fsr.c
+++ b/fsr/xfs_fsr.c
@@ -32,10 +32,6 @@
#include <sys/statvfs.h>
#include <sys/xattr.h>
-#ifdef HAVE_MNTENT
-# include <mntent.h>
-#endif
-
#ifndef XFS_XFLAG_NODEFRAG
#define XFS_XFLAG_NODEFRAG 0x00002000 /* src dependancy, remove later */
#endif
@@ -174,60 +170,69 @@ aborter(int unused)
exit(1);
}
+
+
/*
* Check if the argument is either the device name or mountpoint of an XFS
* filesystem. Note that we do not care about bind mounted regular files
* here - the code that handles defragmentation of invidual files takes care
* of that.
*/
+
static char *
-find_mountpoint(char *mtab, char *argname, struct stat64 *sb)
+find_mountpoint_check(struct stat64 *sb, struct mntent *t, struct stat64 ms)
{
- struct mntent *t;
- struct stat64 ms;
- FILE *mtabp;
- char *mntp = NULL;
+ if (S_ISDIR(sb->st_mode)) { /* mount point */
+ if (stat64(t->mnt_dir, &ms) < 0)
+ return NULL;
+ if (sb->st_ino != ms.st_ino)
+ return NULL;
+ if (sb->st_dev != ms.st_dev)
+ return NULL;
+ if (strcmp(t->mnt_type, MNTTYPE_XFS) != 0)
+ return NULL;
+ } else { /* device */
+ struct stat64 sb2;
+
+ if (stat64(t->mnt_fsname, &ms) < 0)
+ return NULL;
+ if (sb->st_rdev != ms.st_rdev)
+ return NULL;
+ if (strcmp(t->mnt_type, MNTTYPE_XFS) != 0)
+ return NULL;
- mtabp = setmntent(mtab, "r");
- if (!mtabp) {
- fprintf(stderr, _("%s: cannot read %s\n"),
- progname, mtab);
- exit(1);
+ /*
+ * Make sure the mountpoint given by mtab is accessible
+ * before using it.
+ */
+ if (stat64(t->mnt_dir, &sb2) < 0)
+ return NULL;
}
- while ((t = getmntent(mtabp))) {
- if (S_ISDIR(sb->st_mode)) { /* mount point */
- if (stat64(t->mnt_dir, &ms) < 0)
- continue;
- if (sb->st_ino != ms.st_ino)
- continue;
- if (sb->st_dev != ms.st_dev)
- continue;
- if (strcmp(t->mnt_type, MNTTYPE_XFS) != 0)
- continue;
- } else { /* device */
- struct stat64 sb2;
+ return t->mnt_dir;
- if (stat64(t->mnt_fsname, &ms) < 0)
- continue;
- if (sb->st_rdev != ms.st_rdev)
- continue;
- if (strcmp(t->mnt_type, MNTTYPE_XFS) != 0)
- continue;
+}
- /*
- * Make sure the mountpoint given by mtab is accessible
- * before using it.
- */
- if (stat64(t->mnt_dir, &sb2) < 0)
- continue;
- }
+static char *
+find_mountpoint(char *mtab, char *argname, struct stat64 *sb)
+{
+ struct mntent_cursor cursor;
+ struct stat64 ms;
+ struct mntent t = {};
+ char *mntp = NULL;
- mntp = t->mnt_dir;
+ if (platform_mntent_open(&cursor, mtab) != 0){
+ fprintf(stderr, "Error: can't get mntent entries.\n");
+ exit(1);
+ }
+
+ while (platform_mntent_next(&cursor, &t) == 0) {
+ mntp = find_mountpoint_check(sb, &t, ms);
+ if (mntp == NULL)
+ continue;
break;
}
-
- endmntent(mtabp);
+ platform_mntent_close(&cursor);
return mntp;
}
@@ -405,18 +410,11 @@ usage(int ret)
static void
initallfs(char *mtab)
{
- FILE *fp;
struct mntent *mp;
int mi;
char *cp;
struct stat64 sb;
- fp = setmntent(mtab, "r");
- if (fp == NULL) {
- fsrprintf(_("could not open mtab file: %s\n"), mtab);
- exit(1);
- }
-
/* malloc a number of descriptors, increased later if needed */
if (!(fsbase = (fsdesc_t *)malloc(fsbufsize * sizeof(fsdesc_t)))) {
fsrprintf(_("out of memory: %s\n"), strerror(errno));
@@ -427,7 +425,36 @@ initallfs(char *mtab)
/* find all rw xfs file systems */
mi = 0;
fs = fsbase;
+
+#if defined(HAVE_GETMNTENT)
+ FILE *fp;
+ fp = setmntent(mtab, "r");
+ if (fp == NULL) {
+ fsrprintf(_("could not open mtab file: %s\n"), mtab);
+ exit(1);
+ }
+
while ((mp = getmntent(fp))) {
+#elif defined(HAVE_GETMNTINFO)
+ struct statfs *stats;
+ int error, i, count;
+ // because "t" is a pointer, but we don't need to use
+ // malloc for this usage
+ struct mntent mp_tmp;
+ mp = &mp_tmp;
+ error = 0;
+ if ((count = getmntinfo(&stats, 0)) < 0) {
+ fprintf(stderr, _("%s: getmntinfo() failed: %s\n"),
+ progname, strerror(errno));
+ exit(1);
+ }
+
+ for (i = 0; i < count; i++) {
+ mntinfo2mntent(&stats[i], mp);
+#else
+# error "How do I extract info about mounted filesystems on this platform?"
+#endif
+
int rw = 0;
if (strcmp(mp->mnt_type, MNTTYPE_XFS ) != 0 ||
@@ -479,7 +506,9 @@ initallfs(char *mtab)
}
numfs = mi;
fsend = (fsbase + numfs);
+#if defined(HAVE_GETMNTENT)
endmntent(fp);
+#endif
if (numfs == 0) {
fsrprintf(_("no rw xfs file systems in mtab: %s\n"), mtab);
exit(0);
diff --git a/include/darwin.h b/include/darwin.h
index 288ad1f..fd9384d 100644
--- a/include/darwin.h
+++ b/include/darwin.h
@@ -33,6 +33,8 @@
#include <mach/mach_time.h>
#include <inttypes.h>
#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
#include <machine/endian.h>
#define __BYTE_ORDER BYTE_ORDER
@@ -218,7 +220,69 @@ static inline int timer_gettime (timer_t timerid, struct itimerspec *value)
/* FSR */
+# include <sys/mount.h>
+# include <sys/param.h>
+#include <sys/ucred.h>
+#include <errno.h>
#define statvfs64 statfs
#define _PATH_MOUNTED "/etc/mtab"
+struct mntent
+{
+ char *mnt_fsname;
+ char *mnt_dir;
+ char *mnt_type;
+ char *mnt_opts;
+ int mnt_freq;
+ int mnt_passno;
+};
+
+static inline void mntinfo2mntent (struct statfs * stats, struct mntent * mnt) {
+ mnt->mnt_fsname = stats->f_mntfromname;
+ mnt->mnt_dir = stats->f_mntonname;
+ mnt->mnt_type = stats->f_fstypename;
+}
+
+
+
+/**
+ * Abstraction of mountpoints.
+ */
+struct mntent_cursor {
+ FILE *mtabp;
+ struct statfs *stats;
+ int count;
+ int i;
+};
+
+/**
+ * OS X uses getmntinfo, which doesn't use a mtab file. So we just ignore it.
+ */
+static inline int platform_mntent_open(struct mntent_cursor * cursor, char *mtab)
+{
+ if ((cursor->count = getmntinfo(&cursor->stats, 0)) < 0) {
+ fprintf(stderr, "Error: getmntinfo() failed: %s\n", strerror(errno));
+ return 1;
+ }
+ cursor->i = 0;
+ return 0;
+}
+
+static inline int platform_mntent_next(struct mntent_cursor * cursor, struct mntent * t)
+{
+ if (cursor->i >= cursor->count){
+ return 1;
+ }
+ mntinfo2mntent(&cursor->stats[cursor->i], t);
+ cursor->i++;
+ return 0;
+
+}
+
+static inline void platform_mntent_close(struct mntent_cursor * cursor)
+{
+ cursor->count = 0;
+ cursor->i = 0;
+}
+
#endif /* __XFS_DARWIN_H__ */
diff --git a/include/freebsd.h b/include/freebsd.h
index 902b940..6bc9e61 100644
--- a/include/freebsd.h
+++ b/include/freebsd.h
@@ -26,6 +26,7 @@
#include <libgen.h>
#include <paths.h>
#include <uuid.h>
+#include <mntent.h>
#include <sys/endian.h>
#define __BYTE_ORDER BYTE_ORDER
@@ -147,4 +148,35 @@ platform_discard_blocks(int fd, uint64_t start, uint64_t len)
return 0;
}
+/**
+ * Abstraction of mountpoints.
+ */
+struct mntent_cursor {
+ FILE *mtabp;
+};
+
+static inline int platform_mntent_open(struct mntent_cursor * cursor, char *mtab)
+{
+ cursor->mtabp = setmntent(mtab, "r");
+ if (!cursor->mtabp) {
+ fprintf(stderr, "Error: cannot read %s\n", mtab);
+ return 1;
+ }
+ return 0;
+}
+
+static inline int platform_mntent_next(struct mntent_cursor * cursor, struct mntent * t)
+{
+ t = getmntent(cursor->mtabp);
+ if (t == NULL)
+ return 1;
+ return 0;
+}
+
+static inline void platform_mntent_close(struct mntent_cursor * cursor)
+{
+ endmntent(cursor->mtabp);
+}
+
+
#endif /* __XFS_FREEBSD_H__ */
diff --git a/include/gnukfreebsd.h b/include/gnukfreebsd.h
index 95c4c13..2740cae 100644
--- a/include/gnukfreebsd.h
+++ b/include/gnukfreebsd.h
@@ -31,6 +31,7 @@
#include <ctype.h>
#include <libgen.h>
#include <paths.h>
+#include <mntent.h>
#define constpp char * const *
@@ -126,4 +127,34 @@ platform_discard_blocks(int fd, uint64_t start, uint64_t len)
return 0;
}
+/**
+ * Abstraction of mountpoints.
+ */
+struct mntent_cursor {
+ FILE *mtabp;
+};
+
+static inline int platform_mntent_open(struct mntent_cursor * cursor, char *mtab)
+{
+ cursor->mtabp = setmntent(mtab, "r");
+ if (!cursor->mtabp) {
+ fprintf(stderr, "Error: cannot read %s\n", mtab);
+ return 1;
+ }
+ return 0;
+}
+
+static inline int platform_mntent_next(struct mntent_cursor * cursor, struct mntent * t)
+{
+ t = getmntent(cursor->mtabp);
+ if (t == NULL)
+ return 1;
+ return 0;
+}
+
+static inline void platform_mntent_close(struct mntent_cursor * cursor)
+{
+ endmntent(cursor->mtabp);
+}
+
#endif /* __XFS_KFREEBSD_H__ */
diff --git a/include/irix.h b/include/irix.h
index 28564c8..cb9cce0 100644
--- a/include/irix.h
+++ b/include/irix.h
@@ -37,6 +37,7 @@
#include <sys/sysmacros.h>
#include <sys/fs/xfs_fsops.h>
#include <sys/fs/xfs_itable.h>
+#include <mntent.h>
#define __int8_t char
#define __int16_t short
@@ -423,4 +424,35 @@ static __inline__ char * strsep(char **s, const char *ct)
#define XFS_XFLAG_NODEFRAG 0x00002000
+/**
+ * Abstraction of mountpoints.
+ */
+struct mntent_cursor {
+ FILE *mtabp;
+};
+
+static inline int platform_mntent_open(struct mntent_cursor * cursor, char *mtab)
+{
+ cursor->mtabp = setmntent(mtab, "r");
+ if (!cursor->mtabp) {
+ fprintf(stderr, "Error: cannot read %s\n", mtab);
+ return 1;
+ }
+ return 0;
+}
+
+static inline int platform_mntent_next(struct mntent_cursor * cursor, struct mntent * t)
+{
+ t = getmntent(cursor->mtabp);
+ if (t == NULL)
+ return 1;
+ return 0;
+}
+
+static inline void platform_mntent_close(struct mntent_cursor * cursor)
+{
+ endmntent(cursor->mtabp);
+}
+
+
#endif /* __XFS_IRIX_H__ */
diff --git a/include/linux.h b/include/linux.h
index 8804c2d..437970b 100644
--- a/include/linux.h
+++ b/include/linux.h
@@ -30,6 +30,7 @@
#include <endian.h>
#include <stdbool.h>
#include <asm/types.h>
+#include <mntent.h>
static __inline__ int xfsctl(const char *path, int fd, int cmd, void *p)
{
@@ -145,4 +146,34 @@ typedef __uint64_t xfs_ino_t;
typedef __uint32_t xfs_dev_t;
typedef __int64_t xfs_daddr_t;
+/**
+ * Abstraction of mountpoints.
+ */
+struct mntent_cursor {
+ FILE *mtabp;
+};
+
+static inline int platform_mntent_open(struct mntent_cursor * cursor, char *mtab)
+{
+ cursor->mtabp = setmntent(mtab, "r");
+ if (!cursor->mtabp) {
+ fprintf(stderr, "Error: cannot read %s\n", mtab);
+ return 1;
+ }
+ return 0;
+}
+
+static inline int platform_mntent_next(struct mntent_cursor * cursor, struct mntent * t)
+{
+ t = getmntent(cursor->mtabp);
+ if (t == NULL)
+ return 1;
+ return 0;
+}
+
+static inline void platform_mntent_close(struct mntent_cursor * cursor)
+{
+ endmntent(cursor->mtabp);
+}
+
#endif /* __XFS_LINUX_H__ */
--
2.4.3
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