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-rw-r--r--fs/proc/base.c34
1 files changed, 23 insertions, 11 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 39fd336cfdb9..e31903aadd96 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -820,7 +820,7 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
820 goto out_free_page; 820 goto out_free_page;
821 821
822 } 822 }
823 length = audit_set_loginuid(task->audit_context, loginuid); 823 length = audit_set_loginuid(task, loginuid);
824 if (likely(length == 0)) 824 if (likely(length == 0))
825 length = count; 825 length = count;
826 826
@@ -1419,6 +1419,8 @@ static struct file_operations proc_tgid_attr_operations;
1419static struct inode_operations proc_tgid_attr_inode_operations; 1419static struct inode_operations proc_tgid_attr_inode_operations;
1420#endif 1420#endif
1421 1421
1422static int get_tid_list(int index, unsigned int *tids, struct inode *dir);
1423
1422/* SMP-safe */ 1424/* SMP-safe */
1423static struct dentry *proc_pident_lookup(struct inode *dir, 1425static struct dentry *proc_pident_lookup(struct inode *dir,
1424 struct dentry *dentry, 1426 struct dentry *dentry,
@@ -1458,7 +1460,7 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
1458 */ 1460 */
1459 switch(p->type) { 1461 switch(p->type) {
1460 case PROC_TGID_TASK: 1462 case PROC_TGID_TASK:
1461 inode->i_nlink = 3; 1463 inode->i_nlink = 2 + get_tid_list(2, NULL, dir);
1462 inode->i_op = &proc_task_inode_operations; 1464 inode->i_op = &proc_task_inode_operations;
1463 inode->i_fop = &proc_task_operations; 1465 inode->i_fop = &proc_task_operations;
1464 break; 1466 break;
@@ -1701,13 +1703,13 @@ static struct inode_operations proc_self_inode_operations = {
1701}; 1703};
1702 1704
1703/** 1705/**
1704 * proc_pid_unhash - Unhash /proc/<pid> entry from the dcache. 1706 * proc_pid_unhash - Unhash /proc/@pid entry from the dcache.
1705 * @p: task that should be flushed. 1707 * @p: task that should be flushed.
1706 * 1708 *
1707 * Drops the /proc/<pid> dcache entry from the hash chains. 1709 * Drops the /proc/@pid dcache entry from the hash chains.
1708 * 1710 *
1709 * Dropping /proc/<pid> entries and detach_pid must be synchroneous, 1711 * Dropping /proc/@pid entries and detach_pid must be synchroneous,
1710 * otherwise e.g. /proc/<pid>/exe might point to the wrong executable, 1712 * otherwise e.g. /proc/@pid/exe might point to the wrong executable,
1711 * if the pid value is immediately reused. This is enforced by 1713 * if the pid value is immediately reused. This is enforced by
1712 * - caller must acquire spin_lock(p->proc_lock) 1714 * - caller must acquire spin_lock(p->proc_lock)
1713 * - must be called before detach_pid() 1715 * - must be called before detach_pid()
@@ -1739,8 +1741,8 @@ struct dentry *proc_pid_unhash(struct task_struct *p)
1739} 1741}
1740 1742
1741/** 1743/**
1742 * proc_pid_flush - recover memory used by stale /proc/<pid>/x entries 1744 * proc_pid_flush - recover memory used by stale /proc/@pid/x entries
1743 * @proc_entry: directoy to prune. 1745 * @proc_dentry: directoy to prune.
1744 * 1746 *
1745 * Shrink the /proc directory that was used by the just killed thread. 1747 * Shrink the /proc directory that was used by the just killed thread.
1746 */ 1748 */
@@ -1800,8 +1802,12 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct
1800 inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO; 1802 inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
1801 inode->i_op = &proc_tgid_base_inode_operations; 1803 inode->i_op = &proc_tgid_base_inode_operations;
1802 inode->i_fop = &proc_tgid_base_operations; 1804 inode->i_fop = &proc_tgid_base_operations;
1803 inode->i_nlink = 3;
1804 inode->i_flags|=S_IMMUTABLE; 1805 inode->i_flags|=S_IMMUTABLE;
1806#ifdef CONFIG_SECURITY
1807 inode->i_nlink = 5;
1808#else
1809 inode->i_nlink = 4;
1810#endif
1805 1811
1806 dentry->d_op = &pid_base_dentry_operations; 1812 dentry->d_op = &pid_base_dentry_operations;
1807 1813
@@ -1855,8 +1861,12 @@ static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry
1855 inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO; 1861 inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
1856 inode->i_op = &proc_tid_base_inode_operations; 1862 inode->i_op = &proc_tid_base_inode_operations;
1857 inode->i_fop = &proc_tid_base_operations; 1863 inode->i_fop = &proc_tid_base_operations;
1858 inode->i_nlink = 3;
1859 inode->i_flags|=S_IMMUTABLE; 1864 inode->i_flags|=S_IMMUTABLE;
1865#ifdef CONFIG_SECURITY
1866 inode->i_nlink = 4;
1867#else
1868 inode->i_nlink = 3;
1869#endif
1860 1870
1861 dentry->d_op = &pid_base_dentry_operations; 1871 dentry->d_op = &pid_base_dentry_operations;
1862 1872
@@ -1935,7 +1945,8 @@ static int get_tid_list(int index, unsigned int *tids, struct inode *dir)
1935 1945
1936 if (--index >= 0) 1946 if (--index >= 0)
1937 continue; 1947 continue;
1938 tids[nr_tids] = tid; 1948 if (tids != NULL)
1949 tids[nr_tids] = tid;
1939 nr_tids++; 1950 nr_tids++;
1940 if (nr_tids >= PROC_MAXPIDS) 1951 if (nr_tids >= PROC_MAXPIDS)
1941 break; 1952 break;
@@ -2035,6 +2046,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
2035 } 2046 }
2036 2047
2037 nr_tids = get_tid_list(pos, tid_array, inode); 2048 nr_tids = get_tid_list(pos, tid_array, inode);
2049 inode->i_nlink = pos + nr_tids;
2038 2050
2039 for (i = 0; i < nr_tids; i++) { 2051 for (i = 0; i < nr_tids; i++) {
2040 unsigned long j = PROC_NUMBUF; 2052 unsigned long j = PROC_NUMBUF;