From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/ipc/shm.c | 66 ++++++++++++++++++++++----------
1 files changed, 45 insertions(+), 21 deletions(-)
diff --git a/kernel/ipc/shm.c b/kernel/ipc/shm.c
index ba99f48..b418731 100644
--- a/kernel/ipc/shm.c
+++ b/kernel/ipc/shm.c
@@ -711,7 +711,7 @@
ns->shm_tot + numpages > ns->shm_ctlall)
return -ENOSPC;
- shp = kvmalloc(sizeof(*shp), GFP_KERNEL);
+ shp = kvmalloc(sizeof(*shp), GFP_KERNEL_ACCOUNT);
if (unlikely(!shp))
return -ENOMEM;
@@ -807,8 +807,7 @@
/*
* Called with shm_ids.rwsem and ipcp locked.
*/
-static inline int shm_more_checks(struct kern_ipc_perm *ipcp,
- struct ipc_params *params)
+static int shm_more_checks(struct kern_ipc_perm *ipcp, struct ipc_params *params)
{
struct shmid_kernel *shp;
@@ -1233,16 +1232,15 @@
return err;
}
-long ksys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
+static long ksys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf, int version)
{
- int err, version;
+ int err;
struct ipc_namespace *ns;
struct shmid64_ds sem64;
if (cmd < 0 || shmid < 0)
return -EINVAL;
- version = ipc_parse_version(&cmd);
ns = current->nsproxy->ipc_ns;
switch (cmd) {
@@ -1277,7 +1275,7 @@
case IPC_SET:
if (copy_shmid_from_user(&sem64, buf, version))
return -EFAULT;
- /* fallthru */
+ fallthrough;
case IPC_RMID:
return shmctl_down(ns, shmid, cmd, &sem64);
case SHM_LOCK:
@@ -1290,17 +1288,31 @@
SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf)
{
- return ksys_shmctl(shmid, cmd, buf);
+ return ksys_shmctl(shmid, cmd, buf, IPC_64);
}
+
+#ifdef CONFIG_ARCH_WANT_IPC_PARSE_VERSION
+long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
+{
+ int version = ipc_parse_version(&cmd);
+
+ return ksys_shmctl(shmid, cmd, buf, version);
+}
+
+SYSCALL_DEFINE3(old_shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf)
+{
+ return ksys_old_shmctl(shmid, cmd, buf);
+}
+#endif
#ifdef CONFIG_COMPAT
struct compat_shmid_ds {
struct compat_ipc_perm shm_perm;
int shm_segsz;
- compat_time_t shm_atime;
- compat_time_t shm_dtime;
- compat_time_t shm_ctime;
+ old_time32_t shm_atime;
+ old_time32_t shm_dtime;
+ old_time32_t shm_ctime;
compat_ipc_pid_t shm_cpid;
compat_ipc_pid_t shm_lpid;
unsigned short shm_nattch;
@@ -1415,11 +1427,10 @@
}
}
-long compat_ksys_shmctl(int shmid, int cmd, void __user *uptr)
+static long compat_ksys_shmctl(int shmid, int cmd, void __user *uptr, int version)
{
struct ipc_namespace *ns;
struct shmid64_ds sem64;
- int version = compat_ipc_parse_version(&cmd);
int err;
ns = current->nsproxy->ipc_ns;
@@ -1459,13 +1470,12 @@
case IPC_SET:
if (copy_compat_shmid_from_user(&sem64, uptr, version))
return -EFAULT;
- /* fallthru */
+ fallthrough;
case IPC_RMID:
return shmctl_down(ns, shmid, cmd, &sem64);
case SHM_LOCK:
case SHM_UNLOCK:
return shmctl_do_lock(ns, shmid, cmd);
- break;
default:
return -EINVAL;
}
@@ -1474,8 +1484,22 @@
COMPAT_SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, void __user *, uptr)
{
- return compat_ksys_shmctl(shmid, cmd, uptr);
+ return compat_ksys_shmctl(shmid, cmd, uptr, IPC_64);
}
+
+#ifdef CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION
+long compat_ksys_old_shmctl(int shmid, int cmd, void __user *uptr)
+{
+ int version = compat_ipc_parse_version(&cmd);
+
+ return compat_ksys_shmctl(shmid, cmd, uptr, version);
+}
+
+COMPAT_SYSCALL_DEFINE3(old_shmctl, int, shmid, int, cmd, void __user *, uptr)
+{
+ return compat_ksys_old_shmctl(shmid, cmd, uptr);
+}
+#endif
#endif
/*
@@ -1614,7 +1638,7 @@
if (err)
goto out_fput;
- if (down_write_killable(¤t->mm->mmap_sem)) {
+ if (mmap_write_lock_killable(current->mm)) {
err = -EINTR;
goto out_fput;
}
@@ -1628,13 +1652,13 @@
goto invalid;
}
- addr = do_mmap_pgoff(file, addr, size, prot, flags, 0, &populate, NULL);
+ addr = do_mmap(file, addr, size, prot, flags, 0, &populate, NULL);
*raddr = addr;
err = 0;
if (IS_ERR_VALUE(addr))
err = (long)addr;
invalid:
- up_write(¤t->mm->mmap_sem);
+ mmap_write_unlock(current->mm);
if (populate)
mm_populate(addr, populate);
@@ -1709,7 +1733,7 @@
if (addr & ~PAGE_MASK)
return retval;
- if (down_write_killable(&mm->mmap_sem))
+ if (mmap_write_lock_killable(mm))
return -EINTR;
/*
@@ -1797,7 +1821,7 @@
#endif
- up_write(&mm->mmap_sem);
+ mmap_write_unlock(mm);
return retval;
}
--
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