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Diffstat (limited to 'ipc')
-rw-r--r--ipc/ipc_sysctl.c35
-rw-r--r--ipc/mqueue.c28
2 files changed, 31 insertions, 32 deletions
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 2b14ce8ce73f..affd66537e87 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -113,9 +113,6 @@ static int proc_ipc_sem_dointvec(struct ctl_table *table, int write,
#define proc_ipc_sem_dointvec NULL
#endif
-static int zero;
-static int one = 1;
-static int int_max = INT_MAX;
int ipc_mni = IPCMNI;
int ipc_mni_shift = IPCMNI_SHIFT;
int ipc_min_cycle = RADIX_TREE_MAP_SIZE;
@@ -141,7 +138,7 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(init_ipc_ns.shm_ctlmni),
.mode = 0644,
.proc_handler = proc_ipc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &ipc_mni,
},
{
@@ -150,8 +147,8 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(init_ipc_ns.shm_rmid_forced),
.mode = 0644,
.proc_handler = proc_ipc_dointvec_minmax_orphans,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "msgmax",
@@ -159,8 +156,8 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(init_ipc_ns.msg_ctlmax),
.mode = 0644,
.proc_handler = proc_ipc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &int_max,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_INT_MAX,
},
{
.procname = "msgmni",
@@ -168,7 +165,7 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(init_ipc_ns.msg_ctlmni),
.mode = 0644,
.proc_handler = proc_ipc_dointvec_minmax,
- .extra1 = &zero,
+ .extra1 = SYSCTL_ZERO,
.extra2 = &ipc_mni,
},
{
@@ -177,8 +174,8 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_ipc_auto_msgmni,
- .extra1 = &zero,
- .extra2 = &one,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
},
{
.procname = "msgmnb",
@@ -186,8 +183,8 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(init_ipc_ns.msg_ctlmnb),
.mode = 0644,
.proc_handler = proc_ipc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &int_max,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_INT_MAX,
},
{
.procname = "sem",
@@ -203,8 +200,8 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(init_ipc_ns.ids[IPC_SEM_IDS].next_id),
.mode = 0644,
.proc_handler = proc_ipc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &int_max,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_INT_MAX,
},
{
.procname = "msg_next_id",
@@ -212,8 +209,8 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(init_ipc_ns.ids[IPC_MSG_IDS].next_id),
.mode = 0644,
.proc_handler = proc_ipc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &int_max,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_INT_MAX,
},
{
.procname = "shm_next_id",
@@ -221,8 +218,8 @@ static struct ctl_table ipc_kern_table[] = {
.maxlen = sizeof(init_ipc_ns.ids[IPC_SHM_IDS].next_id),
.mode = 0644,
.proc_handler = proc_ipc_dointvec_minmax,
- .extra1 = &zero,
- .extra2 = &int_max,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_INT_MAX,
},
#endif
{}
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 216cad1ff0d0..7a5a8edc3de3 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -364,8 +364,6 @@ static int mqueue_get_tree(struct fs_context *fc)
{
struct mqueue_fs_context *ctx = fc->fs_private;
- put_user_ns(fc->user_ns);
- fc->user_ns = get_user_ns(ctx->ipc_ns->user_ns);
fc->s_fs_info = ctx->ipc_ns;
return vfs_get_super(fc, vfs_get_keyed_super, mqueue_fill_super);
}
@@ -374,8 +372,7 @@ static void mqueue_fs_context_free(struct fs_context *fc)
{
struct mqueue_fs_context *ctx = fc->fs_private;
- if (ctx->ipc_ns)
- put_ipc_ns(ctx->ipc_ns);
+ put_ipc_ns(ctx->ipc_ns);
kfree(ctx);
}
@@ -388,6 +385,8 @@ static int mqueue_init_fs_context(struct fs_context *fc)
return -ENOMEM;
ctx->ipc_ns = get_ipc_ns(current->nsproxy->ipc_ns);
+ put_user_ns(fc->user_ns);
+ fc->user_ns = get_user_ns(ctx->ipc_ns->user_ns);
fc->fs_private = ctx;
fc->ops = &mqueue_fs_context_ops;
return 0;
@@ -406,6 +405,8 @@ static struct vfsmount *mq_create_mount(struct ipc_namespace *ns)
ctx = fc->fs_private;
put_ipc_ns(ctx->ipc_ns);
ctx->ipc_ns = get_ipc_ns(ns);
+ put_user_ns(fc->user_ns);
+ fc->user_ns = get_user_ns(ctx->ipc_ns->user_ns);
mnt = fc_mount(fc);
put_fs_context(fc);
@@ -438,7 +439,6 @@ static void mqueue_evict_inode(struct inode *inode)
{
struct mqueue_inode_info *info;
struct user_struct *user;
- unsigned long mq_bytes, mq_treesize;
struct ipc_namespace *ipc_ns;
struct msg_msg *msg, *nmsg;
LIST_HEAD(tmp_msg);
@@ -461,16 +461,18 @@ static void mqueue_evict_inode(struct inode *inode)
free_msg(msg);
}
- /* Total amount of bytes accounted for the mqueue */
- mq_treesize = info->attr.mq_maxmsg * sizeof(struct msg_msg) +
- min_t(unsigned int, info->attr.mq_maxmsg, MQ_PRIO_MAX) *
- sizeof(struct posix_msg_tree_node);
-
- mq_bytes = mq_treesize + (info->attr.mq_maxmsg *
- info->attr.mq_msgsize);
-
user = info->user;
if (user) {
+ unsigned long mq_bytes, mq_treesize;
+
+ /* Total amount of bytes accounted for the mqueue */
+ mq_treesize = info->attr.mq_maxmsg * sizeof(struct msg_msg) +
+ min_t(unsigned int, info->attr.mq_maxmsg, MQ_PRIO_MAX) *
+ sizeof(struct posix_msg_tree_node);
+
+ mq_bytes = mq_treesize + (info->attr.mq_maxmsg *
+ info->attr.mq_msgsize);
+
spin_lock(&mq_lock);
user->mq_bytes -= mq_bytes;
/*
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-22 21:10:01 +0300