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https://github.com/Qortal/Brooklyn.git
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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/mount.h>
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#include <linux/major.h>
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#include <linux/grsecurity.h>
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#include <linux/grinternal.h>
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void
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gr_log_remount(const char *devname, const int retval)
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{
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#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
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if (grsec_enable_mount && (retval >= 0))
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gr_log_str(GR_DO_AUDIT, GR_REMOUNT_AUDIT_MSG, devname ? devname : "none");
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#endif
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return;
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}
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void
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gr_log_unmount(const char *devname, const int retval)
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{
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#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
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if (grsec_enable_mount && (retval >= 0))
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gr_log_str(GR_DO_AUDIT, GR_UNMOUNT_AUDIT_MSG, devname ? devname : "none");
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#endif
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return;
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}
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void
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gr_log_mount(const char *from, struct path *to, const int retval)
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{
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#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
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if (grsec_enable_mount && (retval >= 0))
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gr_log_str_fs(GR_DO_AUDIT, GR_MOUNT_AUDIT_MSG, from ? from : "none", to->dentry, to->mnt);
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#endif
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return;
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}
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int
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gr_handle_rofs_mount(struct dentry *dentry, struct vfsmount *mnt, int mnt_flags)
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{
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#ifdef CONFIG_GRKERNSEC_ROFS
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if (grsec_enable_rofs && !(mnt_flags & MNT_READONLY)) {
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gr_log_fs_generic(GR_DO_AUDIT, GR_ROFS_MOUNT_MSG, dentry, mnt);
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return -EPERM;
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} else
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return 0;
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#endif
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return 0;
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}
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int
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gr_handle_rofs_blockwrite(struct dentry *dentry, struct vfsmount *mnt, int acc_mode)
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{
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#ifdef CONFIG_GRKERNSEC_ROFS
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struct inode *inode = d_backing_inode(dentry);
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if (grsec_enable_rofs && (acc_mode & MAY_WRITE) &&
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inode && (S_ISBLK(inode->i_mode) || (S_ISCHR(inode->i_mode) && imajor(inode) == RAW_MAJOR))) {
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gr_log_fs_generic(GR_DO_AUDIT, GR_ROFS_BLOCKWRITE_MSG, dentry, mnt);
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return -EPERM;
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} else
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return 0;
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#endif
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return 0;
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}
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