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authorCyrill Gorcunov <gorcunov@openvz.org>2012-08-23 14:43:24 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-09-26 21:10:01 -0400
commitfaf60af17f8da87e1c87a6be527344791025ce9e (patch)
tree72f58a1061383a38dc6618f911d4becc95a22c03 /fs/proc/internal.h
parent864bdb3b6cbd9911222543fef1cfe36f88183f44 (diff)
procfs: Move /proc/pid/fd[info] handling code to fd.[ch]
This patch prepares the ground for further extension of /proc/pid/fd[info] handling code by moving fdinfo handling code into fs/proc/fd.c. I think such move makes both fs/proc/base.c and fs/proc/fd.c easier to read. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com> CC: Al Viro <viro@ZenIV.linux.org.uk> CC: Alexey Dobriyan <adobriyan@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> CC: James Bottomley <jbottomley@parallels.com> CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> CC: Alexey Dobriyan <adobriyan@gmail.com> CC: Matthew Helsley <matt.helsley@gmail.com> CC: "J. Bruce Fields" <bfields@fieldses.org> CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/proc/internal.h')
-rw-r--r--fs/proc/internal.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index e1167a1c9126..67925a7bd8cb 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -9,6 +9,7 @@
* 2 of the License, or (at your option) any later version.
*/
+#include <linux/sched.h>
#include <linux/proc_fs.h>
struct ctl_table_header;
@@ -65,6 +66,7 @@ extern const struct file_operations proc_clear_refs_operations;
extern const struct file_operations proc_pagemap_operations;
extern const struct file_operations proc_net_operations;
extern const struct inode_operations proc_net_inode_operations;
+extern const struct inode_operations proc_pid_link_inode_operations;
struct proc_maps_private {
struct pid *pid;
@@ -91,6 +93,52 @@ static inline int proc_fd(struct inode *inode)
return PROC_I(inode)->fd;
}
+static inline int task_dumpable(struct task_struct *task)
+{
+ int dumpable = 0;
+ struct mm_struct *mm;
+
+ task_lock(task);
+ mm = task->mm;
+ if (mm)
+ dumpable = get_dumpable(mm);
+ task_unlock(task);
+ if(dumpable == 1)
+ return 1;
+ return 0;
+}
+
+static inline int pid_delete_dentry(const struct dentry * dentry)
+{
+ /* Is the task we represent dead?
+ * If so, then don't put the dentry on the lru list,
+ * kill it immediately.
+ */
+ return !proc_pid(dentry->d_inode)->tasks[PIDTYPE_PID].first;
+}
+
+static inline unsigned name_to_int(struct dentry *dentry)
+{
+ const char *name = dentry->d_name.name;
+ int len = dentry->d_name.len;
+ unsigned n = 0;
+
+ if (len > 1 && *name == '0')
+ goto out;
+ while (len-- > 0) {
+ unsigned c = *name++ - '0';
+ if (c > 9)
+ goto out;
+ if (n >= (~0U-9)/10)
+ goto out;
+ n *= 10;
+ n += c;
+ }
+ return n;
+out:
+ return ~0U;
+}
+
struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
struct dentry *dentry);
int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,