* go into icache. We cache the reference to task_struct upon lookup too.
* Eventually it should become a filesystem in its own. We don't use the
* rest of procfs anymore.
+ *
+ *
+ * Changelog:
+ * 17-Jan-2005
+ * Allan Bezerra
+ * Bruna Moreira <bruna.moreira@indt.org.br>
+ * Edjard Mota <edjard.mota@indt.org.br>
+ * Ilias Biris <ilias.biris@indt.org.br>
+ * Mauricio Lin <mauricio.lin@indt.org.br>
+ *
+ * Embedded Linux Lab - 10LE Instituto Nokia de Tecnologia - INdT
+ *
+ * A new process specific entry (smaps) included in /proc. It shows the
+ * size of rss for each memory area. The maps entry lacks information
+ * about physical memory size (rss) for each mapped file, i.e.,
+ * rss information for executables and library files.
+ * This additional information is useful for any tools that need to know
+ * about physical memory consumption for a process specific library.
+ *
+ * Changelog:
+ * 21-Feb-2005
+ * Embedded Linux Lab - 10LE Instituto Nokia de Tecnologia - INdT
+ * Pud inclusion in the page table walking.
+ *
+ * ChangeLog:
+ * 10-Mar-2005
+ * 10LE Instituto Nokia de Tecnologia - INdT:
+ * A better way to walks through the page table as suggested by Hugh Dickins.
+ *
+ * Simo Piiroinen <simo.piiroinen@nokia.com>:
+ * Smaps information related to shared, private, clean and dirty pages.
+ *
+ * Paul Mundt <paul.mundt@nokia.com>:
+ * Overall revision about smaps.
*/
#include <asm/uaccess.h>
PROC_TGID_STAT,
PROC_TGID_STATM,
PROC_TGID_MAPS,
+ PROC_TGID_NUMA_MAPS,
PROC_TGID_MOUNTS,
PROC_TGID_WCHAN,
+ PROC_TGID_SMAPS,
#ifdef CONFIG_SCHEDSTATS
PROC_TGID_SCHEDSTAT,
#endif
PROC_TID_STAT,
PROC_TID_STATM,
PROC_TID_MAPS,
+ PROC_TID_NUMA_MAPS,
PROC_TID_MOUNTS,
PROC_TID_WCHAN,
+ PROC_TID_SMAPS,
#ifdef CONFIG_SCHEDSTATS
PROC_TID_SCHEDSTAT,
#endif
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),
+#ifdef CONFIG_NUMA
+ E(PROC_TGID_NUMA_MAPS, "numa_maps", S_IFREG|S_IRUGO),
+#endif
E(PROC_TGID_MEM, "mem", S_IFREG|S_IRUSR|S_IWUSR),
#ifdef CONFIG_SECCOMP
E(PROC_TGID_SECCOMP, "seccomp", S_IFREG|S_IRUSR|S_IWUSR),
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_SMAPS, "smaps", S_IFREG|S_IRUGO),
#ifdef CONFIG_SECURITY
E(PROC_TGID_ATTR, "attr", S_IFDIR|S_IRUGO|S_IXUGO),
#endif
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),
+#ifdef CONFIG_NUMA
+ E(PROC_TID_NUMA_MAPS, "numa_maps", S_IFREG|S_IRUGO),
+#endif
E(PROC_TID_MEM, "mem", S_IFREG|S_IRUSR|S_IWUSR),
#ifdef CONFIG_SECCOMP
E(PROC_TID_SECCOMP, "seccomp", S_IFREG|S_IRUSR|S_IWUSR),
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),
+ E(PROC_TID_SMAPS, "smaps", S_IFREG|S_IRUGO),
#ifdef CONFIG_SECURITY
E(PROC_TID_ATTR, "attr", S_IFDIR|S_IRUGO|S_IXUGO),
#endif
(current->gid != task->gid)) && !capable(CAP_SYS_PTRACE))
goto out;
rmb();
- if (!task->mm->dumpable && !capable(CAP_SYS_PTRACE))
+ if (task->mm->dumpable != 1 && !capable(CAP_SYS_PTRACE))
goto out;
if (security_ptrace(current, task))
goto out;
.release = seq_release,
};
+#ifdef CONFIG_NUMA
+extern struct seq_operations proc_pid_numa_maps_op;
+static int numa_maps_open(struct inode *inode, struct file *file)
+{
+ struct task_struct *task = proc_task(inode);
+ int ret = seq_open(file, &proc_pid_numa_maps_op);
+ if (!ret) {
+ struct seq_file *m = file->private_data;
+ m->private = task;
+ }
+ return ret;
+}
+
+static struct file_operations proc_numa_maps_operations = {
+ .open = numa_maps_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+#endif
+
+extern struct seq_operations proc_pid_smaps_op;
+static int smaps_open(struct inode *inode, struct file *file)
+{
+ struct task_struct *task = proc_task(inode);
+ int ret = seq_open(file, &proc_pid_smaps_op);
+ if (!ret) {
+ struct seq_file *m = file->private_data;
+ m->private = task;
+ }
+ return ret;
+}
+
+static struct file_operations proc_smaps_operations = {
+ .open = smaps_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
extern struct seq_operations mounts_op;
static int mounts_open(struct inode *inode, struct file *file)
{
goto out_free_page;
}
- length = audit_set_loginuid(task->audit_context, loginuid);
+ length = audit_set_loginuid(task, loginuid);
if (likely(length == 0))
length = count;
};
#endif /* CONFIG_SECCOMP */
-static int proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct inode *inode = dentry->d_inode;
int error = -EACCES;
error = PROC_I(inode)->op.proc_get_link(inode, &nd->dentry, &nd->mnt);
nd->last_type = LAST_BIND;
out:
- return error;
+ return ERR_PTR(error);
}
static int do_proc_readlink(struct dentry *dentry, struct vfsmount *mnt,
if (mm)
dumpable = mm->dumpable;
task_unlock(task);
- return dumpable;
+ if(dumpable == 1)
+ return 1;
+ return 0;
}
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_op = &proc_mem_inode_operations;
case PROC_TGID_MOUNTS:
inode->i_fop = &proc_mounts_operations;
break;
+ case PROC_TID_SMAPS:
+ case PROC_TGID_SMAPS:
+ inode->i_fop = &proc_smaps_operations;
+ break;
#ifdef CONFIG_SECURITY
case PROC_TID_ATTR:
inode->i_nlink = 2;
return vfs_readlink(dentry,buffer,buflen,tmp);
}
-static int proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
{
char tmp[30];
sprintf(tmp, "%d", current->tgid);
- return vfs_follow_link(nd,tmp);
+ return ERR_PTR(vfs_follow_link(nd,tmp));
}
static struct inode_operations proc_self_inode_operations = {
};
/**
- * proc_pid_unhash - Unhash /proc/<pid> entry from the dcache.
+ * proc_pid_unhash - Unhash /proc/@pid entry from the dcache.
* @p: task that should be flushed.
*
- * Drops the /proc/<pid> dcache entry from the hash chains.
+ * Drops the /proc/@pid dcache entry from the hash chains.
*
- * Dropping /proc/<pid> entries and detach_pid must be synchroneous,
- * otherwise e.g. /proc/<pid>/exe might point to the wrong executable,
+ * Dropping /proc/@pid entries and detach_pid must be synchroneous,
+ * otherwise e.g. /proc/@pid/exe might point to the wrong executable,
* if the pid value is immediately reused. This is enforced by
* - caller must acquire spin_lock(p->proc_lock)
* - must be called before detach_pid()
}
/**
- * proc_pid_flush - recover memory used by stale /proc/<pid>/x entries
- * @proc_entry: directoy to prune.
+ * proc_pid_flush - recover memory used by stale /proc/@pid/x entries
+ * @proc_dentry: directoy to prune.
*
* Shrink the /proc directory that was used by the just killed thread.
*/
projects / linux-2.6 / blobdiff