pid namespaces: round up the API
The set of functions process_session, task_session, process_group and
task_pgrp is confusing, as the names can be mixed with each other when looking
at the code for a long time.
The proposals are to
* equip the functions that return the integer with _nr suffix to
represent that fact,
* and to make all functions work with task (not process) by making
the common prefix of the same name.
For monotony the routines signal_session() and set_signal_session() are
replaced with task_session_nr() and set_task_session(), especially since they
are only used with the explicit task->signal dereference.
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index e7204d7..45f5992 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -80,7 +80,7 @@
*uid = current->uid;
*gid = current->gid;
- *pgrp = process_group(current);
+ *pgrp = task_pgrp_nr(current);
*minproto = *maxproto = AUTOFS_PROTO_VERSION;
diff --git a/fs/autofs/root.c b/fs/autofs/root.c
index c148953..592f640 100644
--- a/fs/autofs/root.c
+++ b/fs/autofs/root.c
@@ -215,7 +215,7 @@
oz_mode = autofs_oz_mode(sbi);
DPRINTK(("autofs_lookup: pid = %u, pgrp = %u, catatonic = %d, "
"oz_mode = %d\n", pid_nr(task_pid(current)),
- process_group(current), sbi->catatonic,
+ task_pgrp_nr(current), sbi->catatonic,
oz_mode));
/*
@@ -536,7 +536,7 @@
struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb);
void __user *argp = (void __user *)arg;
- DPRINTK(("autofs_ioctl: cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u\n",cmd,arg,sbi,process_group(current)));
+ DPRINTK(("autofs_ioctl: cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u\n",cmd,arg,sbi,task_pgrp_nr(current)));
if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
_IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index d85f42f..2d4ae40 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -131,7 +131,7 @@
filesystem without "magic".) */
static inline int autofs4_oz_mode(struct autofs_sb_info *sbi) {
- return sbi->catatonic || process_group(current) == sbi->oz_pgrp;
+ return sbi->catatonic || task_pgrp_nr(current) == sbi->oz_pgrp;
}
/* Does a dentry have some pending activity? */
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index cd81f08..7f05d6c 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -226,7 +226,7 @@
*uid = current->uid;
*gid = current->gid;
- *pgrp = process_group(current);
+ *pgrp = task_pgrp_nr(current);
*minproto = AUTOFS_MIN_PROTO_VERSION;
*maxproto = AUTOFS_MAX_PROTO_VERSION;
@@ -323,7 +323,7 @@
sbi->pipe = NULL;
sbi->catatonic = 1;
sbi->exp_timeout = 0;
- sbi->oz_pgrp = process_group(current);
+ sbi->oz_pgrp = task_pgrp_nr(current);
sbi->sb = s;
sbi->version = 0;
sbi->sub_version = 0;
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 45ff3d6..2bbcc81 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -582,7 +582,7 @@
oz_mode = autofs4_oz_mode(sbi);
DPRINTK("pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d",
- current->pid, process_group(current), sbi->catatonic, oz_mode);
+ current->pid, task_pgrp_nr(current), sbi->catatonic, oz_mode);
unhashed = autofs4_lookup_unhashed(sbi, dentry->d_parent, &dentry->d_name);
if (!unhashed) {
@@ -976,7 +976,7 @@
void __user *p = (void __user *)arg;
DPRINTK("cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u",
- cmd,arg,sbi,process_group(current));
+ cmd,arg,sbi,task_pgrp_nr(current));
if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
_IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 6e2f3b8..9ea2b99 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1385,8 +1385,8 @@
prstatus->pr_sighold = p->blocked.sig[0];
prstatus->pr_pid = p->pid;
prstatus->pr_ppid = p->parent->pid;
- prstatus->pr_pgrp = process_group(p);
- prstatus->pr_sid = process_session(p);
+ prstatus->pr_pgrp = task_pgrp_nr(p);
+ prstatus->pr_sid = task_session_nr(p);
if (thread_group_leader(p)) {
/*
* This is the record for the group leader. Add in the
@@ -1431,8 +1431,8 @@
psinfo->pr_pid = p->pid;
psinfo->pr_ppid = p->parent->pid;
- psinfo->pr_pgrp = process_group(p);
- psinfo->pr_sid = process_session(p);
+ psinfo->pr_pgrp = task_pgrp_nr(p);
+ psinfo->pr_sid = task_session_nr(p);
i = p->state ? ffz(~p->state) + 1 : 0;
psinfo->pr_state = i;
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 033861c..b8b4e93 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1344,8 +1344,8 @@
prstatus->pr_sighold = p->blocked.sig[0];
prstatus->pr_pid = p->pid;
prstatus->pr_ppid = p->parent->pid;
- prstatus->pr_pgrp = process_group(p);
- prstatus->pr_sid = process_session(p);
+ prstatus->pr_pgrp = task_pgrp_nr(p);
+ prstatus->pr_sid = task_session_nr(p);
if (thread_group_leader(p)) {
/*
* This is the record for the group leader. Add in the
@@ -1393,8 +1393,8 @@
psinfo->pr_pid = p->pid;
psinfo->pr_ppid = p->parent->pid;
- psinfo->pr_pgrp = process_group(p);
- psinfo->pr_sid = process_session(p);
+ psinfo->pr_pgrp = task_pgrp_nr(p);
+ psinfo->pr_sid = task_session_nr(p);
i = p->state ? ffz(~p->state) + 1 : 0;
psinfo->pr_state = i;
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index cdb4c07..359e531 100644
--- a/fs/coda/upcall.c
+++ b/fs/coda/upcall.c
@@ -51,7 +51,7 @@
inp->ih.opcode = opcode;
inp->ih.pid = current->pid;
- inp->ih.pgid = process_group(current);
+ inp->ih.pgid = task_pgrp_nr(current);
#ifdef CONFIG_CODA_FS_OLD_API
memset(&inp->ih.cred, 0, sizeof(struct coda_cred));
inp->ih.cred.cr_fsuid = current->fsuid;
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 27b59f5..24f7f9f 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -449,8 +449,8 @@
gtime += cputime_add(gtime, sig->gtime);
}
- sid = signal_session(sig);
- pgid = process_group(task);
+ sid = task_session_nr(task);
+ pgid = task_pgrp_nr(task);
ppid = rcu_dereference(task->real_parent)->tgid;
unlock_task_sighand(task, &flags);