[Kdfs-commits] [tools]UNNAMED PROJECT branch, master, updated. 5f6f7bea9fe13feb17d8b82e774b0128ba1a433c

[Marko O. <d0...@us...>]

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- Log -----------------------------------------------------------------
commit 5f6f7bea9fe13feb17d8b82e774b0128ba1a433c
Author: Marko Obrovac <mar...@in...>
Date:   Sun Jan 23 15:14:51 2011 +0100

    [ADD] The kdfs_convert utility
    
    Given a file on the kDFS file system, this utility prints out the
    physical path of the kDFS inode.
    
    Usage: kdfs_convert filename ...
    (a variable number of file names can be supplied)

diff --git a/tools/Makefile.am b/tools/Makefile.am
index b933e82..539886e 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -11,7 +11,7 @@
 
 dist_sbin_SCRIPTS = krginit_helper krg_legacy_scheduler
 bin_PROGRAMS = migrate checkpoint restart krgcapset krgcr-run ipccheckpoint ipcrestart
-sbin_PROGRAMS = krgadm krginit mkfs.kdfs kdfs_stat netclient
+sbin_PROGRAMS = krgadm krginit mkfs.kdfs kdfs_stat netclient kdfs_convert
 
 INCLUDES = -I@top_srcdir@/libs/include
 LDADD = @top_builddir@/libs/libkerrighed/libkerrighed.la @top_builddir@/libs/libkrgcb/libkrgcb.la
@@ -29,6 +29,7 @@ ipcrestart_SOURCES = ipcrestart.c
 mkfs_kdfs_SOURCES = mkfs_kdfs.c
 netclient_SOURCES = netclient.c
 kdfs_stat_SOURCES = kdfs_stat.c
+kdfs_convert_SOURCES = kdfs_convert.c
 
 EXTRA_DIST = \
 	krginit_helper.conf \
diff --git a/tools/kdfs_convert.c b/tools/kdfs_convert.c
new file mode 100644
index 0000000..56c42d7
--- /dev/null
+++ b/tools/kdfs_convert.c
@@ -0,0 +1,91 @@
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/** from super.h **/
+#define KDFS_NODEID_MASK       0xFF000000 /* the nodeid in the ino */
+#define KDFS_INO_HIGH_MASK     0x00FFF000 /* the high part of the ino */
+#define KDFS_INO_LOW_MASK      0x00000FFF /* the low part of the ino */
+#define KDFS_EXTRACT_HIGH(x)   (((x) & KDFS_INO_HIGH_MASK) >> 12)
+#define KDFS_EXTRACT_LOW(x)    ((x) & KDFS_INO_LOW_MASK)
+/** for extracting the node id **/
+#define KDFS_EXTRACT_NODEID(x) (((x) & KDFS_NODEID_MASK) >> 24)
+
+
+/**
+ * Prints the util's usage on the specified stream
+ *
+ * @prog the nme of the utility
+ * @fp   the stream to output to
+ */
+void usage(char *prog, FILE *fp) {
+
+	fprintf(fp, "Usage: %s filename ...", prog);
+	
+}
+
+
+/**
+ * Stats the file, etracts the ino and prints the result on the given stream
+ *
+ * @fname  the file name in the kDFS system to stat
+ * @output the output stream on which to print the result
+ *
+ * @returns EXIT_SUCCESS on success,
+ *          EXIT_FAILURE otherwise
+ */
+int print_kdfs_path(char *fname, FILE *output) {
+	
+	struct stat buf;
+	short nodeid, high, low;
+
+	if (stat(fname, &buf) != 0) {
+		fprintf(output, "%s\n", fname);
+		return EXIT_FAILURE;
+	}
+	
+	nodeid = KDFS_EXTRACT_NODEID(buf.st_ino);
+	high = KDFS_EXTRACT_HIGH(buf.st_ino);
+	low = KDFS_EXTRACT_LOW(buf.st_ino);
+	
+	fprintf(output, "%s\t%u/%u/%u\n", fname, nodeid, high, low);
+	
+	return EXIT_SUCCESS;
+	
+}
+
+
+/**
+ * The entry point function
+ *
+ * @argc the number of arguments supplied on the command line
+ * @argv the arguments themselves
+ *
+ * @returns EXIT_SUCCESS on success,
+ *          EXIT_FAILURE otherwise
+ */
+int main(int argc, char **argv) {
+	
+	int index, no_ok = 0;
+	
+	/* check that the user supplied at least one argument */
+	if (argc == 1) {
+		usage(argv[0], stderr);
+		return EXIT_FAILURE;
+	}
+	
+	/* process all the filenames given on the command line */
+	for(index = 1; index < argc; index++) {
+		if (print_kdfs_path(argv[index], stdout) == EXIT_SUCCESS)
+			no_ok++;
+	}
+	
+	if (no_ok > 0)
+		return EXIT_SUCCESS;
+	
+	return EXIT_FAILURE;
+	
+}
+

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

Summary of changes:
 tools/Makefile.am    |    3 +-
 tools/kdfs_convert.c |   91 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 93 insertions(+), 1 deletions(-)
 create mode 100644 tools/kdfs_convert.c


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