[PATCH] proc: modify proc_pident_lookup to be completely table driven
authorEric W. Biederman <ebiederm@xmission.com>
Mon, 2 Oct 2006 09:17:07 +0000 (02:17 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Mon, 2 Oct 2006 14:57:13 +0000 (07:57 -0700)
Currently proc_pident_lookup gets the names and types from a table and then
has a huge switch statement to get the inode and file operations it needs.
That is silly and is becoming increasingly hard to maintain so I just put all
of the information in the table.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fs/proc/base.c
include/linux/proc_fs.h

index cb0cf84df748f81e4c95551df6da0d63050ec98d..9c6a809f92b69228c8ce2ea99d29438a5095b50f 100644 (file)
@@ -194,9 +194,36 @@ struct pid_entry {
        int len;
        char *name;
        mode_t mode;
+       struct inode_operations *iop;
+       struct file_operations *fop;
+       union proc_op op;
 };
 
-#define E(type,name,mode) {(type),sizeof(name)-1,(name),(mode)}
+#define NOD(TYPE, NAME, MODE, IOP, FOP, OP) {          \
+       .type = (TYPE),                                 \
+       .len  = sizeof(NAME) - 1,                       \
+       .name = (NAME),                                 \
+       .mode = MODE,                                   \
+       .iop  = IOP,                                    \
+       .fop  = FOP,                                    \
+       .op   = OP,                                     \
+}
+
+#define DIR(TYPE, NAME, MODE, OTYPE)                                           \
+       NOD(TYPE, NAME, (S_IFDIR|(MODE)),                                       \
+               &proc_##OTYPE##_inode_operations, &proc_##OTYPE##_operations,   \
+               {} )
+#define LNK(TYPE, NAME, OTYPE)                                 \
+       NOD(TYPE, NAME, (S_IFLNK|S_IRWXUGO),                    \
+               &proc_pid_link_inode_operations, NULL,          \
+               { .proc_get_link = &proc_##OTYPE##_link } )
+#define REG(TYPE, NAME, MODE, OTYPE)                   \
+       NOD(TYPE, NAME, (S_IFREG|(MODE)), NULL,         \
+               &proc_##OTYPE##_operations, {})
+#define INF(TYPE, NAME, MODE, OTYPE)                   \
+       NOD(TYPE, NAME, (S_IFREG|(MODE)),               \
+               NULL, &proc_info_file_operations,       \
+               { .proc_read = &proc_##OTYPE } )
 
 static struct fs_struct *get_fs_struct(struct task_struct *task)
 {
@@ -1367,17 +1394,6 @@ static struct inode_operations proc_fd_inode_operations = {
        .setattr        = proc_setattr,
 };
 
-static struct file_operations proc_task_operations;
-static struct inode_operations proc_task_inode_operations;
-
-#ifdef CONFIG_SECURITY
-static struct file_operations proc_pid_attr_operations;
-static struct file_operations proc_tid_attr_operations;
-static struct inode_operations proc_tid_attr_inode_operations;
-static struct file_operations proc_tgid_attr_operations;
-static struct inode_operations proc_tgid_attr_inode_operations;
-#endif
-
 /* SMP-safe */
 static struct dentry *proc_pident_lookup(struct inode *dir, 
                                         struct dentry *dentry,
@@ -1395,6 +1411,10 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
        if (!task)
                goto out_no_task;
 
+       /*
+        * Yes, it does not scale. And it should not. Don't add
+        * new entries into /proc/<tgid>/ without very good reasons.
+        */
        for (p = ents; p->name; p++) {
                if (p->len != dentry->d_name.len)
                        continue;
@@ -1411,171 +1431,13 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
 
        ei = PROC_I(inode);
        inode->i_mode = p->mode;
-       /*
-        * Yes, it does not scale. And it should not. Don't add
-        * new entries into /proc/<tgid>/ without very good reasons.
-        */
-       switch(p->type) {
-               case PROC_TGID_TASK:
-                       inode->i_nlink = 2;
-                       inode->i_op = &proc_task_inode_operations;
-                       inode->i_fop = &proc_task_operations;
-                       break;
-               case PROC_TID_FD:
-               case PROC_TGID_FD:
-                       inode->i_nlink = 2;
-                       inode->i_op = &proc_fd_inode_operations;
-                       inode->i_fop = &proc_fd_operations;
-                       break;
-               case PROC_TID_EXE:
-               case PROC_TGID_EXE:
-                       inode->i_op = &proc_pid_link_inode_operations;
-                       ei->op.proc_get_link = proc_exe_link;
-                       break;
-               case PROC_TID_CWD:
-               case PROC_TGID_CWD:
-                       inode->i_op = &proc_pid_link_inode_operations;
-                       ei->op.proc_get_link = proc_cwd_link;
-                       break;
-               case PROC_TID_ROOT:
-               case PROC_TGID_ROOT:
-                       inode->i_op = &proc_pid_link_inode_operations;
-                       ei->op.proc_get_link = proc_root_link;
-                       break;
-               case PROC_TID_ENVIRON:
-               case PROC_TGID_ENVIRON:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_pid_environ;
-                       break;
-               case PROC_TID_AUXV:
-               case PROC_TGID_AUXV:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_pid_auxv;
-                       break;
-               case PROC_TID_STATUS:
-               case PROC_TGID_STATUS:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_pid_status;
-                       break;
-               case PROC_TID_STAT:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_tid_stat;
-                       break;
-               case PROC_TGID_STAT:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_tgid_stat;
-                       break;
-               case PROC_TID_CMDLINE:
-               case PROC_TGID_CMDLINE:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_pid_cmdline;
-                       break;
-               case PROC_TID_STATM:
-               case PROC_TGID_STATM:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_pid_statm;
-                       break;
-               case PROC_TID_MAPS:
-               case PROC_TGID_MAPS:
-                       inode->i_fop = &proc_maps_operations;
-                       break;
-#ifdef CONFIG_NUMA
-               case PROC_TID_NUMA_MAPS:
-               case PROC_TGID_NUMA_MAPS:
-                       inode->i_fop = &proc_numa_maps_operations;
-                       break;
-#endif
-               case PROC_TID_MEM:
-               case PROC_TGID_MEM:
-                       inode->i_fop = &proc_mem_operations;
-                       break;
-#ifdef CONFIG_SECCOMP
-               case PROC_TID_SECCOMP:
-               case PROC_TGID_SECCOMP:
-                       inode->i_fop = &proc_seccomp_operations;
-                       break;
-#endif /* CONFIG_SECCOMP */
-               case PROC_TID_MOUNTS:
-               case PROC_TGID_MOUNTS:
-                       inode->i_fop = &proc_mounts_operations;
-                       break;
-#ifdef CONFIG_MMU
-               case PROC_TID_SMAPS:
-               case PROC_TGID_SMAPS:
-                       inode->i_fop = &proc_smaps_operations;
-                       break;
-#endif
-               case PROC_TID_MOUNTSTATS:
-               case PROC_TGID_MOUNTSTATS:
-                       inode->i_fop = &proc_mountstats_operations;
-                       break;
-#ifdef CONFIG_SECURITY
-               case PROC_TID_ATTR:
-                       inode->i_nlink = 2;
-                       inode->i_op = &proc_tid_attr_inode_operations;
-                       inode->i_fop = &proc_tid_attr_operations;
-                       break;
-               case PROC_TGID_ATTR:
-                       inode->i_nlink = 2;
-                       inode->i_op = &proc_tgid_attr_inode_operations;
-                       inode->i_fop = &proc_tgid_attr_operations;
-                       break;
-               case PROC_TID_ATTR_CURRENT:
-               case PROC_TGID_ATTR_CURRENT:
-               case PROC_TID_ATTR_PREV:
-               case PROC_TGID_ATTR_PREV:
-               case PROC_TID_ATTR_EXEC:
-               case PROC_TGID_ATTR_EXEC:
-               case PROC_TID_ATTR_FSCREATE:
-               case PROC_TGID_ATTR_FSCREATE:
-               case PROC_TID_ATTR_KEYCREATE:
-               case PROC_TGID_ATTR_KEYCREATE:
-               case PROC_TID_ATTR_SOCKCREATE:
-               case PROC_TGID_ATTR_SOCKCREATE:
-                       inode->i_fop = &proc_pid_attr_operations;
-                       break;
-#endif
-#ifdef CONFIG_KALLSYMS
-               case PROC_TID_WCHAN:
-               case PROC_TGID_WCHAN:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_pid_wchan;
-                       break;
-#endif
-#ifdef CONFIG_SCHEDSTATS
-               case PROC_TID_SCHEDSTAT:
-               case PROC_TGID_SCHEDSTAT:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_pid_schedstat;
-                       break;
-#endif
-#ifdef CONFIG_CPUSETS
-               case PROC_TID_CPUSET:
-               case PROC_TGID_CPUSET:
-                       inode->i_fop = &proc_cpuset_operations;
-                       break;
-#endif
-               case PROC_TID_OOM_SCORE:
-               case PROC_TGID_OOM_SCORE:
-                       inode->i_fop = &proc_info_file_operations;
-                       ei->op.proc_read = proc_oom_score;
-                       break;
-               case PROC_TID_OOM_ADJUST:
-               case PROC_TGID_OOM_ADJUST:
-                       inode->i_fop = &proc_oom_adjust_operations;
-                       break;
-#ifdef CONFIG_AUDITSYSCALL
-               case PROC_TID_LOGINUID:
-               case PROC_TGID_LOGINUID:
-                       inode->i_fop = &proc_loginuid_operations;
-                       break;
-#endif
-               default:
-                       printk("procfs: impossible type (%d)",p->type);
-                       iput(inode);
-                       error = ERR_PTR(-EINVAL);
-                       goto out;
-       }
+       if (S_ISDIR(inode->i_mode))
+               inode->i_nlink = 2;     /* Use getattr to fix if necessary */
+       if (p->iop)
+               inode->i_op = p->iop;
+       if (p->fop)
+               inode->i_fop = p->fop;
+       ei->op = p->op;
        dentry->d_op = &pid_dentry_operations;
        d_add(dentry, inode);
        /* Close the race of the process dying before we return the dentry */
@@ -1720,22 +1582,22 @@ static struct file_operations proc_pid_attr_operations = {
 };
 
 static struct pid_entry tgid_attr_stuff[] = {
-       E(PROC_TGID_ATTR_CURRENT,  "current",  S_IFREG|S_IRUGO|S_IWUGO),
-       E(PROC_TGID_ATTR_PREV,     "prev",     S_IFREG|S_IRUGO),
-       E(PROC_TGID_ATTR_EXEC,     "exec",     S_IFREG|S_IRUGO|S_IWUGO),
-       E(PROC_TGID_ATTR_FSCREATE, "fscreate", S_IFREG|S_IRUGO|S_IWUGO),
-       E(PROC_TGID_ATTR_KEYCREATE, "keycreate", S_IFREG|S_IRUGO|S_IWUGO),
-       E(PROC_TGID_ATTR_SOCKCREATE, "sockcreate", S_IFREG|S_IRUGO|S_IWUGO),
-       {0,0,NULL,0}
+       REG(PROC_TGID_ATTR_CURRENT,    "current",    S_IRUGO|S_IWUGO, pid_attr),
+       REG(PROC_TGID_ATTR_PREV,       "prev",       S_IRUGO,         pid_attr),
+       REG(PROC_TGID_ATTR_EXEC,       "exec",       S_IRUGO|S_IWUGO, pid_attr),
+       REG(PROC_TGID_ATTR_FSCREATE,   "fscreate",   S_IRUGO|S_IWUGO, pid_attr),
+       REG(PROC_TGID_ATTR_KEYCREATE,  "keycreate",  S_IRUGO|S_IWUGO, pid_attr),
+       REG(PROC_TGID_ATTR_SOCKCREATE, "sockcreate", S_IRUGO|S_IWUGO, pid_attr),
+       {}
 };
 static struct pid_entry tid_attr_stuff[] = {
-       E(PROC_TID_ATTR_CURRENT,   "current",  S_IFREG|S_IRUGO|S_IWUGO),
-       E(PROC_TID_ATTR_PREV,      "prev",     S_IFREG|S_IRUGO),
-       E(PROC_TID_ATTR_EXEC,      "exec",     S_IFREG|S_IRUGO|S_IWUGO),
-       E(PROC_TID_ATTR_FSCREATE,  "fscreate", S_IFREG|S_IRUGO|S_IWUGO),
-       E(PROC_TID_ATTR_KEYCREATE, "keycreate", S_IFREG|S_IRUGO|S_IWUGO),
-       E(PROC_TID_ATTR_SOCKCREATE, "sockcreate", S_IFREG|S_IRUGO|S_IWUGO),
-       {0,0,NULL,0}
+       REG(PROC_TID_ATTR_CURRENT,    "current",    S_IRUGO|S_IWUGO, pid_attr),
+       REG(PROC_TID_ATTR_PREV,       "prev",       S_IRUGO,         pid_attr),
+       REG(PROC_TID_ATTR_EXEC,       "exec",       S_IRUGO|S_IWUGO, pid_attr),
+       REG(PROC_TID_ATTR_FSCREATE,   "fscreate",   S_IRUGO|S_IWUGO, pid_attr),
+       REG(PROC_TID_ATTR_KEYCREATE,  "keycreate",  S_IRUGO|S_IWUGO, pid_attr),
+       REG(PROC_TID_ATTR_SOCKCREATE, "sockcreate", S_IRUGO|S_IWUGO, pid_attr),
+       {}
 };
 
 static int proc_tgid_attr_readdir(struct file * filp,
@@ -1813,49 +1675,52 @@ static struct inode_operations proc_self_inode_operations = {
 /*
  * Thread groups
  */
+static struct file_operations proc_task_operations;
+static struct inode_operations proc_task_inode_operations;
+
 static struct pid_entry tgid_base_stuff[] = {
-       E(PROC_TGID_TASK,      "task",    S_IFDIR|S_IRUGO|S_IXUGO),
-       E(PROC_TGID_FD,        "fd",      S_IFDIR|S_IRUSR|S_IXUSR),
-       E(PROC_TGID_ENVIRON,   "environ", S_IFREG|S_IRUSR),
-       E(PROC_TGID_AUXV,      "auxv",    S_IFREG|S_IRUSR),
-       E(PROC_TGID_STATUS,    "status",  S_IFREG|S_IRUGO),
-       E(PROC_TGID_CMDLINE,   "cmdline", S_IFREG|S_IRUGO),
-       E(PROC_TGID_STAT,      "stat",    S_IFREG|S_IRUGO),
-       E(PROC_TGID_STATM,     "statm",   S_IFREG|S_IRUGO),
-       E(PROC_TGID_MAPS,      "maps",    S_IFREG|S_IRUGO),
+       DIR(PROC_TGID_TASK,       "task",       S_IRUGO|S_IXUGO, task),
+       DIR(PROC_TGID_FD,         "fd",         S_IRUSR|S_IXUSR, fd),
+       INF(PROC_TGID_ENVIRON,    "environ",    S_IRUSR, pid_environ),
+       INF(PROC_TGID_AUXV,       "auxv",       S_IRUSR, pid_auxv),
+       INF(PROC_TGID_STATUS,     "status",     S_IRUGO, pid_status),
+       INF(PROC_TGID_CMDLINE,    "cmdline",    S_IRUGO, pid_cmdline),
+       INF(PROC_TGID_STAT,       "stat",       S_IRUGO, tgid_stat),
+       INF(PROC_TGID_STATM,      "statm",      S_IRUGO, pid_statm),
+       REG(PROC_TGID_MAPS,       "maps",       S_IRUGO, maps),
 #ifdef CONFIG_NUMA
-       E(PROC_TGID_NUMA_MAPS, "numa_maps", S_IFREG|S_IRUGO),
+       REG(PROC_TGID_NUMA_MAPS,  "numa_maps",  S_IRUGO, numa_maps),
 #endif
-       E(PROC_TGID_MEM,       "mem",     S_IFREG|S_IRUSR|S_IWUSR),
+       REG(PROC_TGID_MEM,        "mem",        S_IRUSR|S_IWUSR, mem),
 #ifdef CONFIG_SECCOMP
-       E(PROC_TGID_SECCOMP,   "seccomp", S_IFREG|S_IRUSR|S_IWUSR),
+       REG(PROC_TGID_SECCOMP,    "seccomp",    S_IRUSR|S_IWUSR, seccomp),
 #endif
-       E(PROC_TGID_CWD,       "cwd",     S_IFLNK|S_IRWXUGO),
-       E(PROC_TGID_ROOT,      "root",    S_IFLNK|S_IRWXUGO),
-       E(PROC_TGID_EXE,       "exe",     S_IFLNK|S_IRWXUGO),
-       E(PROC_TGID_MOUNTS,    "mounts",  S_IFREG|S_IRUGO),
-       E(PROC_TGID_MOUNTSTATS, "mountstats", S_IFREG|S_IRUSR),
+       LNK(PROC_TGID_CWD,        "cwd",        cwd),
+       LNK(PROC_TGID_ROOT,       "root",       root),
+       LNK(PROC_TGID_EXE,        "exe",        exe),
+       REG(PROC_TGID_MOUNTS,     "mounts",     S_IRUGO, mounts),
+       REG(PROC_TGID_MOUNTSTATS, "mountstats", S_IRUSR, mountstats),
 #ifdef CONFIG_MMU
-       E(PROC_TGID_SMAPS,     "smaps",   S_IFREG|S_IRUGO),
+       REG(PROC_TGID_SMAPS,      "smaps",      S_IRUGO, smaps),
 #endif
 #ifdef CONFIG_SECURITY
-       E(PROC_TGID_ATTR,      "attr",    S_IFDIR|S_IRUGO|S_IXUGO),
+       DIR(PROC_TGID_ATTR,       "attr",       S_IRUGO|S_IXUGO, tgid_attr),
 #endif
 #ifdef CONFIG_KALLSYMS
-       E(PROC_TGID_WCHAN,     "wchan",   S_IFREG|S_IRUGO),
+       INF(PROC_TGID_WCHAN,      "wchan",      S_IRUGO, pid_wchan),
 #endif
 #ifdef CONFIG_SCHEDSTATS
-       E(PROC_TGID_SCHEDSTAT, "schedstat", S_IFREG|S_IRUGO),
+       INF(PROC_TGID_SCHEDSTAT,  "schedstat",  S_IRUGO, pid_schedstat),
 #endif
 #ifdef CONFIG_CPUSETS
-       E(PROC_TGID_CPUSET,    "cpuset",  S_IFREG|S_IRUGO),
+       REG(PROC_TGID_CPUSET,     "cpuset",     S_IRUGO, cpuset),
 #endif
-       E(PROC_TGID_OOM_SCORE, "oom_score",S_IFREG|S_IRUGO),
-       E(PROC_TGID_OOM_ADJUST,"oom_adj", S_IFREG|S_IRUGO|S_IWUSR),
+       INF(PROC_TGID_OOM_SCORE,  "oom_score",  S_IRUGO, oom_score),
+       REG(PROC_TGID_OOM_ADJUST, "oom_adj",    S_IRUGO|S_IWUSR, oom_adjust),
 #ifdef CONFIG_AUDITSYSCALL
-       E(PROC_TGID_LOGINUID, "loginuid", S_IFREG|S_IWUSR|S_IRUGO),
+       REG(PROC_TGID_LOGINUID,   "loginuid",   S_IWUSR|S_IRUGO, loginuid),
 #endif
-       {0,0,NULL,0}
+       {}
 };
 
 static int proc_tgid_base_readdir(struct file * filp,
@@ -2088,46 +1953,46 @@ out:
  * Tasks
  */
 static struct pid_entry tid_base_stuff[] = {
-       E(PROC_TID_FD,         "fd",      S_IFDIR|S_IRUSR|S_IXUSR),
-       E(PROC_TID_ENVIRON,    "environ", S_IFREG|S_IRUSR),
-       E(PROC_TID_AUXV,       "auxv",    S_IFREG|S_IRUSR),
-       E(PROC_TID_STATUS,     "status",  S_IFREG|S_IRUGO),
-       E(PROC_TID_CMDLINE,    "cmdline", S_IFREG|S_IRUGO),
-       E(PROC_TID_STAT,       "stat",    S_IFREG|S_IRUGO),
-       E(PROC_TID_STATM,      "statm",   S_IFREG|S_IRUGO),
-       E(PROC_TID_MAPS,       "maps",    S_IFREG|S_IRUGO),
+       DIR(PROC_TID_FD,         "fd",        S_IRUSR|S_IXUSR, fd),
+       INF(PROC_TID_ENVIRON,    "environ",   S_IRUSR, pid_environ),
+       INF(PROC_TID_AUXV,       "auxv",      S_IRUSR, pid_auxv),
+       INF(PROC_TID_STATUS,     "status",    S_IRUGO, pid_status),
+       INF(PROC_TID_CMDLINE,    "cmdline",   S_IRUGO, pid_cmdline),
+       INF(PROC_TID_STAT,       "stat",      S_IRUGO, tid_stat),
+       INF(PROC_TID_STATM,      "statm",     S_IRUGO, pid_statm),
+       REG(PROC_TID_MAPS,       "maps",      S_IRUGO, maps),
 #ifdef CONFIG_NUMA
-       E(PROC_TID_NUMA_MAPS,  "numa_maps",    S_IFREG|S_IRUGO),
+       REG(PROC_TID_NUMA_MAPS,  "numa_maps", S_IRUGO, numa_maps),
 #endif
-       E(PROC_TID_MEM,        "mem",     S_IFREG|S_IRUSR|S_IWUSR),
+       REG(PROC_TID_MEM,        "mem",       S_IRUSR|S_IWUSR, mem),
 #ifdef CONFIG_SECCOMP
-       E(PROC_TID_SECCOMP,    "seccomp", S_IFREG|S_IRUSR|S_IWUSR),
+       REG(PROC_TID_SECCOMP,    "seccomp",   S_IRUSR|S_IWUSR, seccomp),
 #endif
-       E(PROC_TID_CWD,        "cwd",     S_IFLNK|S_IRWXUGO),
-       E(PROC_TID_ROOT,       "root",    S_IFLNK|S_IRWXUGO),
-       E(PROC_TID_EXE,        "exe",     S_IFLNK|S_IRWXUGO),
-       E(PROC_TID_MOUNTS,     "mounts",  S_IFREG|S_IRUGO),
+       LNK(PROC_TID_CWD,        "cwd",       cwd),
+       LNK(PROC_TID_ROOT,       "root",      root),
+       LNK(PROC_TID_EXE,        "exe",       exe),
+       REG(PROC_TID_MOUNTS,     "mounts",    S_IRUGO, mounts),
 #ifdef CONFIG_MMU
-       E(PROC_TID_SMAPS,      "smaps",   S_IFREG|S_IRUGO),
+       REG(PROC_TID_SMAPS,      "smaps",     S_IRUGO, smaps),
 #endif
 #ifdef CONFIG_SECURITY
-       E(PROC_TID_ATTR,       "attr",    S_IFDIR|S_IRUGO|S_IXUGO),
+       DIR(PROC_TID_ATTR,       "attr",      S_IRUGO|S_IXUGO, tid_attr),
 #endif
 #ifdef CONFIG_KALLSYMS
-       E(PROC_TID_WCHAN,      "wchan",   S_IFREG|S_IRUGO),
+       INF(PROC_TID_WCHAN,      "wchan",     S_IRUGO, pid_wchan),
 #endif
 #ifdef CONFIG_SCHEDSTATS
-       E(PROC_TID_SCHEDSTAT, "schedstat",S_IFREG|S_IRUGO),
+       INF(PROC_TID_SCHEDSTAT,  "schedstat", S_IRUGO, pid_schedstat),
 #endif
 #ifdef CONFIG_CPUSETS
-       E(PROC_TID_CPUSET,     "cpuset",  S_IFREG|S_IRUGO),
+       REG(PROC_TID_CPUSET,     "cpuset",    S_IRUGO, cpuset),
 #endif
-       E(PROC_TID_OOM_SCORE,  "oom_score",S_IFREG|S_IRUGO),
-       E(PROC_TID_OOM_ADJUST, "oom_adj", S_IFREG|S_IRUGO|S_IWUSR),
+       INF(PROC_TID_OOM_SCORE,  "oom_score", S_IRUGO, oom_score),
+       REG(PROC_TID_OOM_ADJUST, "oom_adj",   S_IRUGO|S_IWUSR, oom_adjust),
 #ifdef CONFIG_AUDITSYSCALL
-       E(PROC_TID_LOGINUID, "loginuid", S_IFREG|S_IWUSR|S_IRUGO),
+       REG(PROC_TID_LOGINUID,   "loginuid",  S_IWUSR|S_IRUGO, loginuid),
 #endif
-       {0,0,NULL,0}
+       {}
 };
 
 static int proc_tid_base_readdir(struct file * filp,
index 57f70bc8b24bba1bf3f9e9336a1a10b01945778c..87dec8fe6de900da1c495175144e21f99a1bf6b1 100644 (file)
@@ -244,13 +244,15 @@ static inline void kclist_add(struct kcore_list *new, void *addr, size_t size)
 extern void kclist_add(struct kcore_list *, void *, size_t);
 #endif
 
+union proc_op {
+       int (*proc_get_link)(struct inode *, struct dentry **, struct vfsmount **);
+       int (*proc_read)(struct task_struct *task, char *page);
+};
+
 struct proc_inode {
        struct pid *pid;
        int fd;
-       union {
-               int (*proc_get_link)(struct inode *, struct dentry **, struct vfsmount **);
-               int (*proc_read)(struct task_struct *task, char *page);
-       } op;
+       union proc_op op;
        struct proc_dir_entry *pde;
        struct inode vfs_inode;
 };