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patches: susfs: Add 5.4k support (v1.3.8)
KSU hook patch for 5.4 isn't tested, feel free to submit a PR if it doesn't work ( from https://github.com/dev-sm8350/kernel_oneplus_sm8350 )
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| 5.4 KernelSU Hook Patch | ||
| * Make sure to disable CONFIG_KPROBE in your device's defconfig | ||
|
|
||
| --- a/fs/exec.c | ||
| +++ b/fs/exec.c | ||
| @@ -1897,11 +1897,25 @@ static int __do_execve_file(int fd, struct filename *filename, | ||
| return retval; | ||
| } | ||
|
|
||
| +#ifdef CONFIG_KSU | ||
| +extern bool ksu_execveat_hook __read_mostly; | ||
| +extern int ksu_handle_execveat(int *fd, struct filename **filename_ptr, | ||
| + void *argv, void *envp, int *flags); | ||
| +extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr, | ||
| + void *argv, void *envp, int *flags); | ||
| +#endif | ||
| static int do_execveat_common(int fd, struct filename *filename, | ||
| struct user_arg_ptr argv, | ||
| struct user_arg_ptr envp, | ||
| int flags) | ||
| { | ||
| +#ifdef CONFIG_KSU | ||
| + if (unlikely(ksu_execveat_hook)) | ||
| + ksu_handle_execveat(&fd, &filename, &argv, &envp, &flags); | ||
| + else | ||
| + ksu_handle_execveat_sucompat(&fd, &filename, &argv, &envp, | ||
| + &flags); | ||
| +#endif | ||
| return __do_execve_file(fd, filename, argv, envp, flags, NULL); | ||
| } | ||
|
|
||
| --- a/fs/open.c | ||
| +++ b/fs/open.c | ||
| @@ -340,6 +340,10 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len) | ||
| return ksys_fallocate(fd, mode, offset, len); | ||
| } | ||
|
|
||
| +#ifdef CONFIG_KSU | ||
| +extern int ksu_handle_faccessat(int *dfd, const char __user **filename_user, | ||
| + int *mode, int *flags); | ||
| +#endif | ||
| /* | ||
| * access() needs to use the real uid/gid, not the effective uid/gid. | ||
| * We do this by temporarily clearing all FS-related capabilities and | ||
| @@ -354,6 +358,10 @@ long do_faccessat(int dfd, const char __user *filename, int mode) | ||
| int res; | ||
| unsigned int lookup_flags = LOOKUP_FOLLOW; | ||
|
|
||
| +#ifdef CONFIG_KSU | ||
| + ksu_handle_faccessat(&dfd, &filename, &mode, NULL); | ||
| +#endif | ||
| + | ||
| if (mode & ~S_IRWXO) /* where's F_OK, X_OK, W_OK, R_OK? */ | ||
| return -EINVAL; | ||
|
|
||
| --- a/fs/read_write.c | ||
| +++ b/fs/read_write.c | ||
| @@ -443,10 +443,20 @@ ssize_t kernel_read(struct file *file, void *buf, size_t count, loff_t *pos) | ||
| } | ||
| EXPORT_SYMBOL_NS(kernel_read, ANDROID_GKI_VFS_EXPORT_ONLY); | ||
|
|
||
| +#ifdef CONFIG_KSU | ||
| +extern bool ksu_vfs_read_hook __read_mostly; | ||
| +extern int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr, | ||
| + size_t *count_ptr, loff_t **pos); | ||
| +#endif | ||
| ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) | ||
| { | ||
| ssize_t ret; | ||
|
|
||
| +#ifdef CONFIG_KSU | ||
| + if (unlikely(ksu_vfs_read_hook)) | ||
| + ksu_handle_vfs_read(&file, &buf, &count, &pos); | ||
| +#endif | ||
| + | ||
| if (!(file->f_mode & FMODE_READ)) | ||
| return -EBADF; | ||
| if (!(file->f_mode & FMODE_CAN_READ)) | ||
| --- a/fs/stat.c | ||
| +++ b/fs/stat.c | ||
| @@ -150,6 +150,10 @@ int vfs_statx_fd(unsigned int fd, struct kstat *stat, | ||
| } | ||
| EXPORT_SYMBOL(vfs_statx_fd); | ||
|
|
||
| +#ifdef CONFIG_KSU | ||
| +extern int ksu_handle_stat(int *dfd, const char __user **filename_user, | ||
| + int *flags); | ||
| +#endif | ||
| /** | ||
| * vfs_statx - Get basic and extra attributes by filename | ||
| * @dfd: A file descriptor representing the base dir for a relative filename | ||
| @@ -172,6 +176,10 @@ int vfs_statx(int dfd, const char __user *filename, int flags, | ||
| int error = -EINVAL; | ||
| unsigned int lookup_flags = LOOKUP_FOLLOW | LOOKUP_AUTOMOUNT; | ||
|
|
||
| +#ifdef CONFIG_KSU | ||
| + ksu_handle_stat(&dfd, &filename, &flags); | ||
| +#endif | ||
| + | ||
| if ((flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT | | ||
| AT_EMPTY_PATH | KSTAT_QUERY_FLAGS)) != 0) | ||
| return -EINVAL; | ||
|
|
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