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mcctrl: lookup for alternate syscall names

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on newer x64 kernels (config option?), syscalls can be renamed to allow
both x64 and ia32 versions to coexist. Lookup either names

Change-Id: I2f55cc804d3eee948ee1ed6d18c69c75bd2f652c
This commit is contained in:
Dominique Martinet
2018-10-25 10:16:54 +09:00
committed by Dominique Martinet
parent a2be475ae4
commit 18d50e48dc
1 changed files with 20 additions and 0 deletions
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20
executer/kernel/mcctrl/driver.c
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@ -235,14 +235,29 @@ struct inode_operations *mcctrl_hugetlbfs_inode_operations;
static int symbols_init(void)
{
mcctrl_sys_mount = (void *) kallsyms_lookup_name("sys_mount");
#if defined(CONFIG_X86_64_SMP)
if (!mcctrl_sys_mount)
mcctrl_sys_mount =
(void *) kallsyms_lookup_name("__x64_sys_mount");
#endif
if (WARN_ON(!mcctrl_sys_mount))
return -EFAULT;
mcctrl_sys_umount = (void *) kallsyms_lookup_name("sys_umount");
#if defined(CONFIG_X86_64_SMP)
if (!mcctrl_sys_umount)
mcctrl_sys_umount =
(void *) kallsyms_lookup_name("__x64_sys_umount");
#endif
if (WARN_ON(!mcctrl_sys_umount))
return -EFAULT;
mcctrl_sys_unshare = (void *) kallsyms_lookup_name("sys_unshare");
#if defined(CONFIG_X86_64_SMP)
if (!mcctrl_sys_unshare)
mcctrl_sys_unshare =
(void *) kallsyms_lookup_name("__x64_sys_unshare");
#endif
if (WARN_ON(!mcctrl_sys_unshare))
return -EFAULT;
@ -258,6 +273,11 @@ static int symbols_init(void)
mcctrl_sys_readlink =
(void *) kallsyms_lookup_name("sys_readlink");
#if defined(CONFIG_X86_64_SMP)
if (!mcctrl_sys_readlink)
mcctrl_sys_readlink =
(void *) kallsyms_lookup_name("__x64_sys_readlink");
#endif
if (WARN_ON(!mcctrl_sys_readlink))
return -EFAULT;