Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c
new file mode 100644
index 0000000..f0b1075
--- /dev/null
+++ b/fs/coda/sysctl.c
@@ -0,0 +1,254 @@
+/*
+ * Sysctl operations for Coda filesystem
+ * Original version: (C) 1996 P. Braam and M. Callahan
+ * Rewritten for Linux 2.1. (C) 1997 Carnegie Mellon University
+ *
+ * Carnegie Mellon encourages users to contribute improvements to
+ * the Coda project. Contact Peter Braam (coda@cs.cmu.edu).
+ *
+ * CODA operation statistics
+ * (c) March, 1998 Zhanyong Wan <zhanyong.wan@yale.edu>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/time.h>
+#include <linux/mm.h>
+#include <linux/sysctl.h>
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/ctype.h>
+#include <linux/bitops.h>
+#include <asm/uaccess.h>
+#include <linux/utsname.h>
+#include <linux/module.h>
+
+#include <linux/coda.h>
+#include <linux/coda_linux.h>
+#include <linux/coda_fs_i.h>
+#include <linux/coda_psdev.h>
+#include <linux/coda_cache.h>
+#include <linux/coda_proc.h>
+
+static struct ctl_table_header *fs_table_header;
+
+#define FS_CODA 1 /* Coda file system */
+
+#define CODA_TIMEOUT 3 /* timeout on upcalls to become intrble */
+#define CODA_HARD 5 /* mount type "hard" or "soft" */
+#define CODA_VFS 6 /* vfs statistics */
+#define CODA_CACHE_INV 9 /* cache invalidation statistics */
+#define CODA_FAKE_STATFS 10 /* don't query venus for actual cache usage */
+
+struct coda_vfs_stats coda_vfs_stat;
+static struct coda_cache_inv_stats coda_cache_inv_stat;
+
+static void reset_coda_vfs_stats( void )
+{
+ memset( &coda_vfs_stat, 0, sizeof( coda_vfs_stat ) );
+}
+
+static void reset_coda_cache_inv_stats( void )
+{
+ memset( &coda_cache_inv_stat, 0, sizeof( coda_cache_inv_stat ) );
+}
+
+static int do_reset_coda_vfs_stats( ctl_table * table, int write,
+ struct file * filp, void __user * buffer,
+ size_t * lenp, loff_t * ppos )
+{
+ if ( write ) {
+ reset_coda_vfs_stats();
+
+ *ppos += *lenp;
+ } else {
+ *lenp = 0;
+ }
+
+ return 0;
+}
+
+static int do_reset_coda_cache_inv_stats( ctl_table * table, int write,
+ struct file * filp,
+ void __user * buffer,
+ size_t * lenp, loff_t * ppos )
+{
+ if ( write ) {
+ reset_coda_cache_inv_stats();
+
+ *ppos += *lenp;
+ } else {
+ *lenp = 0;
+ }
+
+ return 0;
+}
+
+static int coda_vfs_stats_get_info( char * buffer, char ** start,
+ off_t offset, int length)
+{
+ int len=0;
+ off_t begin;
+ struct coda_vfs_stats * ps = & coda_vfs_stat;
+
+ /* this works as long as we are below 1024 characters! */
+ len += sprintf( buffer,
+ "Coda VFS statistics\n"
+ "===================\n\n"
+ "File Operations:\n"
+ "\topen\t\t%9d\n"
+ "\tflush\t\t%9d\n"
+ "\trelease\t\t%9d\n"
+ "\tfsync\t\t%9d\n\n"
+ "Dir Operations:\n"
+ "\treaddir\t\t%9d\n\n"
+ "Inode Operations\n"
+ "\tcreate\t\t%9d\n"
+ "\tlookup\t\t%9d\n"
+ "\tlink\t\t%9d\n"
+ "\tunlink\t\t%9d\n"
+ "\tsymlink\t\t%9d\n"
+ "\tmkdir\t\t%9d\n"
+ "\trmdir\t\t%9d\n"
+ "\trename\t\t%9d\n"
+ "\tpermission\t%9d\n",
+
+ /* file operations */
+ ps->open,
+ ps->flush,
+ ps->release,
+ ps->fsync,
+
+ /* dir operations */
+ ps->readdir,
+
+ /* inode operations */
+ ps->create,
+ ps->lookup,
+ ps->link,
+ ps->unlink,
+ ps->symlink,
+ ps->mkdir,
+ ps->rmdir,
+ ps->rename,
+ ps->permission);
+
+ begin = offset;
+ *start = buffer + begin;
+ len -= begin;
+
+ if ( len > length )
+ len = length;
+ if ( len < 0 )
+ len = 0;
+
+ return len;
+}
+
+static int coda_cache_inv_stats_get_info( char * buffer, char ** start,
+ off_t offset, int length)
+{
+ int len=0;
+ off_t begin;
+ struct coda_cache_inv_stats * ps = & coda_cache_inv_stat;
+
+ /* this works as long as we are below 1024 characters! */
+ len += sprintf( buffer,
+ "Coda cache invalidation statistics\n"
+ "==================================\n\n"
+ "flush\t\t%9d\n"
+ "purge user\t%9d\n"
+ "zap_dir\t\t%9d\n"
+ "zap_file\t%9d\n"
+ "zap_vnode\t%9d\n"
+ "purge_fid\t%9d\n"
+ "replace\t\t%9d\n",
+ ps->flush,
+ ps->purge_user,
+ ps->zap_dir,
+ ps->zap_file,
+ ps->zap_vnode,
+ ps->purge_fid,
+ ps->replace );
+
+ begin = offset;
+ *start = buffer + begin;
+ len -= begin;
+
+ if ( len > length )
+ len = length;
+ if ( len < 0 )
+ len = 0;
+
+ return len;
+}
+
+static ctl_table coda_table[] = {
+ {CODA_TIMEOUT, "timeout", &coda_timeout, sizeof(int), 0644, NULL, &proc_dointvec},
+ {CODA_HARD, "hard", &coda_hard, sizeof(int), 0644, NULL, &proc_dointvec},
+ {CODA_VFS, "vfs_stats", NULL, 0, 0644, NULL, &do_reset_coda_vfs_stats},
+ {CODA_CACHE_INV, "cache_inv_stats", NULL, 0, 0644, NULL, &do_reset_coda_cache_inv_stats},
+ {CODA_FAKE_STATFS, "fake_statfs", &coda_fake_statfs, sizeof(int), 0600, NULL, &proc_dointvec},
+ { 0 }
+};
+
+static ctl_table fs_table[] = {
+ {FS_CODA, "coda", NULL, 0, 0555, coda_table},
+ {0}
+};
+
+
+#ifdef CONFIG_PROC_FS
+
+/*
+ target directory structure:
+ /proc/fs (see linux/fs/proc/root.c)
+ /proc/fs/coda
+ /proc/fs/coda/{vfs_stats,
+
+*/
+
+static struct proc_dir_entry* proc_fs_coda;
+
+#endif
+
+#define coda_proc_create(name,get_info) \
+ create_proc_info_entry(name, 0, proc_fs_coda, get_info)
+
+void coda_sysctl_init(void)
+{
+ reset_coda_vfs_stats();
+ reset_coda_cache_inv_stats();
+
+#ifdef CONFIG_PROC_FS
+ proc_fs_coda = proc_mkdir("coda", proc_root_fs);
+ if (proc_fs_coda) {
+ proc_fs_coda->owner = THIS_MODULE;
+ coda_proc_create("vfs_stats", coda_vfs_stats_get_info);
+ coda_proc_create("cache_inv_stats", coda_cache_inv_stats_get_info);
+ }
+#endif
+
+#ifdef CONFIG_SYSCTL
+ if ( !fs_table_header )
+ fs_table_header = register_sysctl_table(fs_table, 0);
+#endif
+}
+
+void coda_sysctl_clean(void)
+{
+
+#ifdef CONFIG_SYSCTL
+ if ( fs_table_header ) {
+ unregister_sysctl_table(fs_table_header);
+ fs_table_header = NULL;
+ }
+#endif
+
+#ifdef CONFIG_PROC_FS
+ remove_proc_entry("cache_inv_stats", proc_fs_coda);
+ remove_proc_entry("vfs_stats", proc_fs_coda);
+ remove_proc_entry("coda", proc_root_fs);
+#endif
+}