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-rw-r--r--fs/proc/base.c998
1 files changed, 501 insertions, 497 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index b18f3773dd4..cb0cf84df74 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -198,147 +198,6 @@ struct pid_entry {
#define E(type,name,mode) {(type),sizeof(name)-1,(name),(mode)}
-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),
-#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),
-#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),
-#ifdef CONFIG_MMU
- E(PROC_TGID_SMAPS, "smaps", S_IFREG|S_IRUGO),
-#endif
-#ifdef CONFIG_SECURITY
- E(PROC_TGID_ATTR, "attr", S_IFDIR|S_IRUGO|S_IXUGO),
-#endif
-#ifdef CONFIG_KALLSYMS
- E(PROC_TGID_WCHAN, "wchan", S_IFREG|S_IRUGO),
-#endif
-#ifdef CONFIG_SCHEDSTATS
- E(PROC_TGID_SCHEDSTAT, "schedstat", S_IFREG|S_IRUGO),
-#endif
-#ifdef CONFIG_CPUSETS
- E(PROC_TGID_CPUSET, "cpuset", S_IFREG|S_IRUGO),
-#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),
-#ifdef CONFIG_AUDITSYSCALL
- E(PROC_TGID_LOGINUID, "loginuid", S_IFREG|S_IWUSR|S_IRUGO),
-#endif
- {0,0,NULL,0}
-};
-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),
-#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),
-#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),
-#ifdef CONFIG_MMU
- E(PROC_TID_SMAPS, "smaps", S_IFREG|S_IRUGO),
-#endif
-#ifdef CONFIG_SECURITY
- E(PROC_TID_ATTR, "attr", S_IFDIR|S_IRUGO|S_IXUGO),
-#endif
-#ifdef CONFIG_KALLSYMS
- E(PROC_TID_WCHAN, "wchan", S_IFREG|S_IRUGO),
-#endif
-#ifdef CONFIG_SCHEDSTATS
- E(PROC_TID_SCHEDSTAT, "schedstat",S_IFREG|S_IRUGO),
-#endif
-#ifdef CONFIG_CPUSETS
- E(PROC_TID_CPUSET, "cpuset", S_IFREG|S_IRUGO),
-#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),
-#ifdef CONFIG_AUDITSYSCALL
- E(PROC_TID_LOGINUID, "loginuid", S_IFREG|S_IWUSR|S_IRUGO),
-#endif
- {0,0,NULL,0}
-};
-
-#ifdef CONFIG_SECURITY
-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}
-};
-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}
-};
-#endif
-
-#undef E
-
-static int proc_fd_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
-{
- struct task_struct *task = get_proc_task(inode);
- struct files_struct *files = NULL;
- struct file *file;
- int fd = proc_fd(inode);
-
- if (task) {
- files = get_files_struct(task);
- put_task_struct(task);
- }
- if (files) {
- /*
- * We are not taking a ref to the file structure, so we must
- * hold ->file_lock.
- */
- spin_lock(&files->file_lock);
- file = fcheck_files(files, fd);
- if (file) {
- *mnt = mntget(file->f_vfsmnt);
- *dentry = dget(file->f_dentry);
- spin_unlock(&files->file_lock);
- put_files_struct(files);
- return 0;
- }
- spin_unlock(&files->file_lock);
- put_files_struct(files);
- }
- return -ENOENT;
-}
-
static struct fs_struct *get_fs_struct(struct task_struct *task)
{
struct fs_struct *fs;
@@ -1137,143 +996,6 @@ static struct inode_operations proc_pid_link_inode_operations = {
.setattr = proc_setattr,
};
-static int proc_readfd(struct file * filp, void * dirent, filldir_t filldir)
-{
- struct dentry *dentry = filp->f_dentry;
- struct inode *inode = dentry->d_inode;
- struct task_struct *p = get_proc_task(inode);
- unsigned int fd, tid, ino;
- int retval;
- char buf[PROC_NUMBUF];
- struct files_struct * files;
- struct fdtable *fdt;
-
- retval = -ENOENT;
- if (!p)
- goto out_no_task;
- retval = 0;
- tid = p->pid;
-
- fd = filp->f_pos;
- switch (fd) {
- case 0:
- if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR) < 0)
- goto out;
- filp->f_pos++;
- case 1:
- ino = parent_ino(dentry);
- if (filldir(dirent, "..", 2, 1, ino, DT_DIR) < 0)
- goto out;
- filp->f_pos++;
- default:
- files = get_files_struct(p);
- if (!files)
- goto out;
- rcu_read_lock();
- fdt = files_fdtable(files);
- for (fd = filp->f_pos-2;
- fd < fdt->max_fds;
- fd++, filp->f_pos++) {
- unsigned int i,j;
-
- if (!fcheck_files(files, fd))
- continue;
- rcu_read_unlock();
-
- j = PROC_NUMBUF;
- i = fd;
- do {
- j--;
- buf[j] = '0' + (i % 10);
- i /= 10;
- } while (i);
-
- ino = fake_ino(tid, PROC_TID_FD_DIR + fd);
- if (filldir(dirent, buf+j, PROC_NUMBUF-j, fd+2, ino, DT_LNK) < 0) {
- rcu_read_lock();
- break;
- }
- rcu_read_lock();
- }
- rcu_read_unlock();
- put_files_struct(files);
- }
-out:
- put_task_struct(p);
-out_no_task:
- return retval;
-}
-
-static int proc_pident_readdir(struct file *filp,
- void *dirent, filldir_t filldir,
- struct pid_entry *ents, unsigned int nents)
-{
- int i;
- int pid;
- struct dentry *dentry = filp->f_dentry;
- struct inode *inode = dentry->d_inode;
- struct task_struct *task = get_proc_task(inode);
- struct pid_entry *p;
- ino_t ino;
- int ret;
-
- ret = -ENOENT;
- if (!task)
- goto out;
-
- ret = 0;
- pid = task->pid;
- put_task_struct(task);
- i = filp->f_pos;
- switch (i) {
- case 0:
- ino = inode->i_ino;
- if (filldir(dirent, ".", 1, i, ino, DT_DIR) < 0)
- goto out;
- i++;
- filp->f_pos++;
- /* fall through */
- case 1:
- ino = parent_ino(dentry);
- if (filldir(dirent, "..", 2, i, ino, DT_DIR) < 0)
- goto out;
- i++;
- filp->f_pos++;
- /* fall through */
- default:
- i -= 2;
- if (i >= nents) {
- ret = 1;
- goto out;
- }
- p = ents + i;
- while (p->name) {
- if (filldir(dirent, p->name, p->len, filp->f_pos,
- fake_ino(pid, p->type), p->mode >> 12) < 0)
- goto out;
- filp->f_pos++;
- p++;
- }
- }
-
- ret = 1;
-out:
- return ret;
-}
-
-static int proc_tgid_base_readdir(struct file * filp,
- void * dirent, filldir_t filldir)
-{
- return proc_pident_readdir(filp,dirent,filldir,
- tgid_base_stuff,ARRAY_SIZE(tgid_base_stuff));
-}
-
-static int proc_tid_base_readdir(struct file * filp,
- void * dirent, filldir_t filldir)
-{
- return proc_pident_readdir(filp,dirent,filldir,
- tid_base_stuff,ARRAY_SIZE(tid_base_stuff));
-}
/* building an inode */
@@ -1299,7 +1021,7 @@ static struct inode *proc_pid_make_inode(struct super_block * sb, struct task_st
struct proc_inode *ei;
/* We need a new inode */
-
+
inode = new_inode(sb);
if (!inode)
goto out;
@@ -1333,6 +1055,27 @@ out_unlock:
return NULL;
}
+static int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
+{
+ struct inode *inode = dentry->d_inode;
+ struct task_struct *task;
+ generic_fillattr(inode, stat);
+
+ rcu_read_lock();
+ stat->uid = 0;
+ stat->gid = 0;
+ task = pid_task(proc_pid(inode), PIDTYPE_PID);
+ if (task) {
+ if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
+ task_dumpable(task)) {
+ stat->uid = task->euid;
+ stat->gid = task->egid;
+ }
+ }
+ rcu_read_unlock();
+ return 0;
+}
+
/* dentry stuff */
/*
@@ -1372,25 +1115,74 @@ static int pid_revalidate(struct dentry *dentry, struct nameidata *nd)
return 0;
}
-static int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
+static int pid_delete_dentry(struct dentry * dentry)
{
- struct inode *inode = dentry->d_inode;
- struct task_struct *task;
- generic_fillattr(inode, stat);
+ /* 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 struct dentry_operations pid_dentry_operations =
+{
+ .d_revalidate = pid_revalidate,
+ .d_delete = pid_delete_dentry,
+};
+
+/* Lookups */
+
+static 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;
+}
+
+static int proc_fd_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
+{
+ struct task_struct *task = get_proc_task(inode);
+ struct files_struct *files = NULL;
+ struct file *file;
+ int fd = proc_fd(inode);
- rcu_read_lock();
- stat->uid = 0;
- stat->gid = 0;
- task = pid_task(proc_pid(inode), PIDTYPE_PID);
if (task) {
- if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
- task_dumpable(task)) {
- stat->uid = task->euid;
- stat->gid = task->egid;
+ files = get_files_struct(task);
+ put_task_struct(task);
+ }
+ if (files) {
+ /*
+ * We are not taking a ref to the file structure, so we must
+ * hold ->file_lock.
+ */
+ spin_lock(&files->file_lock);
+ file = fcheck_files(files, fd);
+ if (file) {
+ *mnt = mntget(file->f_vfsmnt);
+ *dentry = dget(file->f_dentry);
+ spin_unlock(&files->file_lock);
+ put_files_struct(files);
+ return 0;
}
+ spin_unlock(&files->file_lock);
+ put_files_struct(files);
}
- rcu_read_unlock();
- return 0;
+ return -ENOENT;
}
static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
@@ -1428,51 +1220,12 @@ static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
return 0;
}
-static int pid_delete_dentry(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 struct dentry_operations tid_fd_dentry_operations =
{
.d_revalidate = tid_fd_revalidate,
.d_delete = pid_delete_dentry,
};
-static struct dentry_operations pid_dentry_operations =
-{
- .d_revalidate = pid_revalidate,
- .d_delete = pid_delete_dentry,
-};
-
-/* Lookups */
-
-static 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;
-}
-
/* SMP-safe */
static struct dentry *proc_lookupfd(struct inode * dir, struct dentry * dentry, struct nameidata *nd)
{
@@ -1534,20 +1287,78 @@ out_unlock:
goto out;
}
-static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldir);
-static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd);
-static int proc_task_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
+static int proc_readfd(struct file * filp, void * dirent, filldir_t filldir)
+{
+ struct dentry *dentry = filp->f_dentry;
+ struct inode *inode = dentry->d_inode;
+ struct task_struct *p = get_proc_task(inode);
+ unsigned int fd, tid, ino;
+ int retval;
+ char buf[PROC_NUMBUF];
+ struct files_struct * files;
+ struct fdtable *fdt;
+
+ retval = -ENOENT;
+ if (!p)
+ goto out_no_task;
+ retval = 0;
+ tid = p->pid;
+
+ fd = filp->f_pos;
+ switch (fd) {
+ case 0:
+ if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR) < 0)
+ goto out;
+ filp->f_pos++;
+ case 1:
+ ino = parent_ino(dentry);
+ if (filldir(dirent, "..", 2, 1, ino, DT_DIR) < 0)
+ goto out;
+ filp->f_pos++;
+ default:
+ files = get_files_struct(p);
+ if (!files)
+ goto out;
+ rcu_read_lock();
+ fdt = files_fdtable(files);
+ for (fd = filp->f_pos-2;
+ fd < fdt->max_fds;
+ fd++, filp->f_pos++) {
+ unsigned int i,j;
+
+ if (!fcheck_files(files, fd))
+ continue;
+ rcu_read_unlock();
+
+ j = PROC_NUMBUF;
+ i = fd;
+ do {
+ j--;
+ buf[j] = '0' + (i % 10);
+ i /= 10;
+ } while (i);
+
+ ino = fake_ino(tid, PROC_TID_FD_DIR + fd);
+ if (filldir(dirent, buf+j, PROC_NUMBUF-j, fd+2, ino, DT_LNK) < 0) {
+ rcu_read_lock();
+ break;
+ }
+ rcu_read_lock();
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+ }
+out:
+ put_task_struct(p);
+out_no_task:
+ return retval;
+}
static struct file_operations proc_fd_operations = {
.read = generic_read_dir,
.readdir = proc_readfd,
};
-static struct file_operations proc_task_operations = {
- .read = generic_read_dir,
- .readdir = proc_task_readdir,
-};
-
/*
* proc directories can do almost nothing..
*/
@@ -1556,87 +1367,11 @@ static struct inode_operations proc_fd_inode_operations = {
.setattr = proc_setattr,
};
-static struct inode_operations proc_task_inode_operations = {
- .lookup = proc_task_lookup,
- .getattr = proc_task_getattr,
- .setattr = proc_setattr,
-};
+static struct file_operations proc_task_operations;
+static struct inode_operations proc_task_inode_operations;
#ifdef CONFIG_SECURITY
-static ssize_t proc_pid_attr_read(struct file * file, char __user * buf,
- size_t count, loff_t *ppos)
-{
- struct inode * inode = file->f_dentry->d_inode;
- unsigned long page;
- ssize_t length;
- struct task_struct *task = get_proc_task(inode);
-
- length = -ESRCH;
- if (!task)
- goto out_no_task;
-
- if (count > PAGE_SIZE)
- count = PAGE_SIZE;
- length = -ENOMEM;
- if (!(page = __get_free_page(GFP_KERNEL)))
- goto out;
-
- length = security_getprocattr(task,
- (char*)file->f_dentry->d_name.name,
- (void*)page, count);
- if (length >= 0)
- length = simple_read_from_buffer(buf, count, ppos, (char *)page, length);
- free_page(page);
-out:
- put_task_struct(task);
-out_no_task:
- return length;
-}
-
-static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
- size_t count, loff_t *ppos)
-{
- struct inode * inode = file->f_dentry->d_inode;
- char *page;
- ssize_t length;
- struct task_struct *task = get_proc_task(inode);
-
- length = -ESRCH;
- if (!task)
- goto out_no_task;
- if (count > PAGE_SIZE)
- count = PAGE_SIZE;
-
- /* No partial writes. */
- length = -EINVAL;
- if (*ppos != 0)
- goto out;
-
- length = -ENOMEM;
- page = (char*)__get_free_page(GFP_USER);
- if (!page)
- goto out;
-
- length = -EFAULT;
- if (copy_from_user(page, buf, count))
- goto out_free;
-
- length = security_setprocattr(task,
- (char*)file->f_dentry->d_name.name,
- (void*)page, count);
-out_free:
- free_page((unsigned long) page);
-out:
- put_task_struct(task);
-out_no_task:
- return length;
-}
-
-static struct file_operations proc_pid_attr_operations = {
- .read = proc_pid_attr_read,
- .write = proc_pid_attr_write,
-};
-
+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;
@@ -1852,37 +1587,157 @@ out_no_task:
return error;
}
-static struct dentry *proc_tgid_base_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd){
- return proc_pident_lookup(dir, dentry, tgid_base_stuff);
+static int proc_pident_readdir(struct file *filp,
+ void *dirent, filldir_t filldir,
+ struct pid_entry *ents, unsigned int nents)
+{
+ int i;
+ int pid;
+ struct dentry *dentry = filp->f_dentry;
+ struct inode *inode = dentry->d_inode;
+ struct task_struct *task = get_proc_task(inode);
+ struct pid_entry *p;
+ ino_t ino;
+ int ret;
+
+ ret = -ENOENT;
+ if (!task)
+ goto out;
+
+ ret = 0;
+ pid = task->pid;
+ put_task_struct(task);
+ i = filp->f_pos;
+ switch (i) {
+ case 0:
+ ino = inode->i_ino;
+ if (filldir(dirent, ".", 1, i, ino, DT_DIR) < 0)
+ goto out;
+ i++;
+ filp->f_pos++;
+ /* fall through */
+ case 1:
+ ino = parent_ino(dentry);
+ if (filldir(dirent, "..", 2, i, ino, DT_DIR) < 0)
+ goto out;
+ i++;
+ filp->f_pos++;
+ /* fall through */
+ default:
+ i -= 2;
+ if (i >= nents) {
+ ret = 1;
+ goto out;
+ }
+ p = ents + i;
+ while (p->name) {
+ if (filldir(dirent, p->name, p->len, filp->f_pos,
+ fake_ino(pid, p->type), p->mode >> 12) < 0)
+ goto out;
+ filp->f_pos++;
+ p++;
+ }
+ }
+
+ ret = 1;
+out:
+ return ret;
}
-static struct dentry *proc_tid_base_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd){
- return proc_pident_lookup(dir, dentry, tid_base_stuff);
+#ifdef CONFIG_SECURITY
+static ssize_t proc_pid_attr_read(struct file * file, char __user * buf,
+ size_t count, loff_t *ppos)
+{
+ struct inode * inode = file->f_dentry->d_inode;
+ unsigned long page;
+ ssize_t length;
+ struct task_struct *task = get_proc_task(inode);
+
+ length = -ESRCH;
+ if (!task)
+ goto out_no_task;
+
+ if (count > PAGE_SIZE)
+ count = PAGE_SIZE;
+ length = -ENOMEM;
+ if (!(page = __get_free_page(GFP_KERNEL)))
+ goto out;
+
+ length = security_getprocattr(task,
+ (char*)file->f_dentry->d_name.name,
+ (void*)page, count);
+ if (length >= 0)
+ length = simple_read_from_buffer(buf, count, ppos, (char *)page, length);
+ free_page(page);
+out:
+ put_task_struct(task);
+out_no_task:
+ return length;
}
-static struct file_operations proc_tgid_base_operations = {
- .read = generic_read_dir,
- .readdir = proc_tgid_base_readdir,
-};
+static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
+ size_t count, loff_t *ppos)
+{
+ struct inode * inode = file->f_dentry->d_inode;
+ char *page;
+ ssize_t length;
+ struct task_struct *task = get_proc_task(inode);
-static struct file_operations proc_tid_base_operations = {
- .read = generic_read_dir,
- .readdir = proc_tid_base_readdir,
-};
+ length = -ESRCH;
+ if (!task)
+ goto out_no_task;
+ if (count > PAGE_SIZE)
+ count = PAGE_SIZE;
-static struct inode_operations proc_tgid_base_inode_operations = {
- .lookup = proc_tgid_base_lookup,
- .getattr = pid_getattr,
- .setattr = proc_setattr,
+ /* No partial writes. */
+ length = -EINVAL;
+ if (*ppos != 0)
+ goto out;
+
+ length = -ENOMEM;
+ page = (char*)__get_free_page(GFP_USER);
+ if (!page)
+ goto out;
+
+ length = -EFAULT;
+ if (copy_from_user(page, buf, count))
+ goto out_free;
+
+ length = security_setprocattr(task,
+ (char*)file->f_dentry->d_name.name,
+ (void*)page, count);
+out_free:
+ free_page((unsigned long) page);
+out:
+ put_task_struct(task);
+out_no_task:
+ return length;
+}
+
+static struct file_operations proc_pid_attr_operations = {
+ .read = proc_pid_attr_read,
+ .write = proc_pid_attr_write,
};
-static struct inode_operations proc_tid_base_inode_operations = {
- .lookup = proc_tid_base_lookup,
- .getattr = pid_getattr,
- .setattr = proc_setattr,
+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}
+};
+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}
};
-#ifdef CONFIG_SECURITY
static int proc_tgid_attr_readdir(struct file * filp,
void * dirent, filldir_t filldir)
{
@@ -1948,13 +1803,83 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
char tmp[PROC_NUMBUF];
sprintf(tmp, "%d", current->tgid);
return ERR_PTR(vfs_follow_link(nd,tmp));
-}
+}
static struct inode_operations proc_self_inode_operations = {
.readlink = proc_self_readlink,
.follow_link = proc_self_follow_link,
};
+/*
+ * Thread groups
+ */
+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),
+#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),
+#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),
+#ifdef CONFIG_MMU
+ E(PROC_TGID_SMAPS, "smaps", S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_SECURITY
+ E(PROC_TGID_ATTR, "attr", S_IFDIR|S_IRUGO|S_IXUGO),
+#endif
+#ifdef CONFIG_KALLSYMS
+ E(PROC_TGID_WCHAN, "wchan", S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_SCHEDSTATS
+ E(PROC_TGID_SCHEDSTAT, "schedstat", S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_CPUSETS
+ E(PROC_TGID_CPUSET, "cpuset", S_IFREG|S_IRUGO),
+#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),
+#ifdef CONFIG_AUDITSYSCALL
+ E(PROC_TGID_LOGINUID, "loginuid", S_IFREG|S_IWUSR|S_IRUGO),
+#endif
+ {0,0,NULL,0}
+};
+
+static int proc_tgid_base_readdir(struct file * filp,
+ void * dirent, filldir_t filldir)
+{
+ return proc_pident_readdir(filp,dirent,filldir,
+ tgid_base_stuff,ARRAY_SIZE(tgid_base_stuff));
+}
+
+static struct file_operations proc_tgid_base_operations = {
+ .read = generic_read_dir,
+ .readdir = proc_tgid_base_readdir,
+};
+
+static struct dentry *proc_tgid_base_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd){
+ return proc_pident_lookup(dir, dentry, tgid_base_stuff);
+}
+
+static struct inode_operations proc_tgid_base_inode_operations = {
+ .lookup = proc_tgid_base_lookup,
+ .getattr = pid_getattr,
+ .setattr = proc_setattr,
+};
+
/**
* proc_flush_task - Remove dcache entries for @task from the /proc dcache.
*
@@ -2085,62 +2010,6 @@ out:
return result;
}
-/* SMP-safe */
-static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
-{
- struct dentry *result = ERR_PTR(-ENOENT);
- struct task_struct *task;
- struct task_struct *leader = get_proc_task(dir);
- struct inode *inode;
- unsigned tid;
-
- if (!leader)
- goto out_no_task;
-
- tid = name_to_int(dentry);
- if (tid == ~0U)
- goto out;
-
- rcu_read_lock();
- task = find_task_by_pid(tid);
- if (task)
- get_task_struct(task);
- rcu_read_unlock();
- if (!task)
- goto out;
- if (leader->tgid != task->tgid)
- goto out_drop_task;
-
- inode = proc_pid_make_inode(dir->i_sb, task, PROC_TID_INO);
-
-
- if (!inode)
- goto out_drop_task;
- inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
- inode->i_op = &proc_tid_base_inode_operations;
- inode->i_fop = &proc_tid_base_operations;
- inode->i_flags|=S_IMMUTABLE;
-#ifdef CONFIG_SECURITY
- inode->i_nlink = 4;
-#else
- inode->i_nlink = 3;
-#endif
-
- dentry->d_op = &pid_dentry_operations;
-
- d_add(dentry, inode);
- /* Close the race of the process dying before we return the dentry */
- if (pid_revalidate(dentry, NULL))
- result = NULL;
-
-out_drop_task:
- put_task_struct(task);
-out:
- put_task_struct(leader);
-out_no_task:
- return result;
-}
-
/*
* Find the first task with tgid >= tgid
*
@@ -2216,6 +2085,130 @@ 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),
+#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),
+#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),
+#ifdef CONFIG_MMU
+ E(PROC_TID_SMAPS, "smaps", S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_SECURITY
+ E(PROC_TID_ATTR, "attr", S_IFDIR|S_IRUGO|S_IXUGO),
+#endif
+#ifdef CONFIG_KALLSYMS
+ E(PROC_TID_WCHAN, "wchan", S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_SCHEDSTATS
+ E(PROC_TID_SCHEDSTAT, "schedstat",S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_CPUSETS
+ E(PROC_TID_CPUSET, "cpuset", S_IFREG|S_IRUGO),
+#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),
+#ifdef CONFIG_AUDITSYSCALL
+ E(PROC_TID_LOGINUID, "loginuid", S_IFREG|S_IWUSR|S_IRUGO),
+#endif
+ {0,0,NULL,0}
+};
+
+static int proc_tid_base_readdir(struct file * filp,
+ void * dirent, filldir_t filldir)
+{
+ return proc_pident_readdir(filp,dirent,filldir,
+ tid_base_stuff,ARRAY_SIZE(tid_base_stuff));
+}
+
+static struct dentry *proc_tid_base_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd){
+ return proc_pident_lookup(dir, dentry, tid_base_stuff);
+}
+
+static struct file_operations proc_tid_base_operations = {
+ .read = generic_read_dir,
+ .readdir = proc_tid_base_readdir,
+};
+
+static struct inode_operations proc_tid_base_inode_operations = {
+ .lookup = proc_tid_base_lookup,
+ .getattr = pid_getattr,
+ .setattr = proc_setattr,
+};
+
+/* SMP-safe */
+static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
+{
+ struct dentry *result = ERR_PTR(-ENOENT);
+ struct task_struct *task;
+ struct task_struct *leader = get_proc_task(dir);
+ struct inode *inode;
+ unsigned tid;
+
+ if (!leader)
+ goto out_no_task;
+
+ tid = name_to_int(dentry);
+ if (tid == ~0U)
+ goto out;
+
+ rcu_read_lock();
+ task = find_task_by_pid(tid);
+ if (task)
+ get_task_struct(task);
+ rcu_read_unlock();
+ if (!task)
+ goto out;
+ if (leader->tgid != task->tgid)
+ goto out_drop_task;
+
+ inode = proc_pid_make_inode(dir->i_sb, task, PROC_TID_INO);
+
+
+ if (!inode)
+ goto out_drop_task;
+ inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
+ inode->i_op = &proc_tid_base_inode_operations;
+ inode->i_fop = &proc_tid_base_operations;
+ inode->i_flags|=S_IMMUTABLE;
+#ifdef CONFIG_SECURITY
+ inode->i_nlink = 4;
+#else
+ inode->i_nlink = 3;
+#endif
+
+ dentry->d_op = &pid_dentry_operations;
+
+ d_add(dentry, inode);
+ /* Close the race of the process dying before we return the dentry */
+ if (pid_revalidate(dentry, NULL))
+ result = NULL;
+
+out_drop_task:
+ put_task_struct(task);
+out:
+ put_task_struct(leader);
+out_no_task:
+ return result;
+}
+
+/*
* Find the first tid of a thread group to return to user space.
*
* Usually this is just the thread group leader, but if the users
@@ -2358,3 +2351,14 @@ static int proc_task_getattr(struct vfsmount *mnt, struct dentry *dentry, struct
return 0;
}
+
+static struct inode_operations proc_task_inode_operations = {
+ .lookup = proc_task_lookup,
+ .getattr = proc_task_getattr,
+ .setattr = proc_setattr,
+};
+
+static struct file_operations proc_task_operations = {
+ .read = generic_read_dir,
+ .readdir = proc_task_readdir,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 14:33:52 +0000