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[PATCH] proc: give the root directory a task
Helper functions in base.c like proc_pident_readdir and proc_pident_lookup assume the directories have an associated task, and cannot currently be used on the /proc root directory because it does not have such a task. This small changes allows for base.c to be simplified and later when multiple pid spaces are introduced it makes getting the needed context information trivial. 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>
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1 changed files with 12 additions and 0 deletions
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@ -16,6 +16,7 @@
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#include <linux/module.h>
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#include <linux/bitops.h>
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#include <linux/smp_lock.h>
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#include <linux/mount.h>
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#include "internal.h"
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@ -28,6 +29,17 @@ struct proc_dir_entry *proc_sys_root;
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static int proc_get_sb(struct file_system_type *fs_type,
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int flags, const char *dev_name, void *data, struct vfsmount *mnt)
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{
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if (proc_mnt) {
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/* Seed the root directory with a pid so it doesn't need
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* to be special in base.c. I would do this earlier but
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* the only task alive when /proc is mounted the first time
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* is the init_task and it doesn't have any pids.
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*/
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struct proc_inode *ei;
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ei = PROC_I(proc_mnt->mnt_sb->s_root->d_inode);
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if (!ei->pid)
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ei->pid = find_get_pid(1);
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}
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return get_sb_single(fs_type, flags, data, proc_fill_super, mnt);
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}
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