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kernel: ksud, throne_tracker: small changes for UL

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Safe Ultra-Legacy changes that don't deserve their own commit

d_is_reg requires 4.0
 - e36cb0b89c
IS_REG is still there on 6.15 so I do NOT see any issues forcing it for all.

strscpy requires 4.3
strscpy on this usage can be replaced with strncpy + null term.
kernel gives us an option though.
strlcpy is fast af, hotrod fast. It’s just memcpy + null term, so lets go with that.
it got dropped in 6.8 due to risk concerns, so for those, lets use og strscpy.
ref: openwrt/packages #26453

Signed-off-by: backslashxx <118538522+backslashxx@users.noreply.github.com>
This commit is contained in:
backslashxx
2025-05-24 10:22:26 +08:00
committed by rifsxd
parent 6a6fc07cd4
commit c4deee1e49
2 changed files with 9 additions and 1 deletions
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2
kernel/ksud.c
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@@ -338,7 +338,7 @@ int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
return 0;
}
if (!d_is_reg(file->f_path.dentry)) {
if (!S_ISREG(file->f_path.dentry->d_inode->i_mode)) {
return 0;
}

8
kernel/throne_tracker.c
View File

@@ -174,7 +174,11 @@ FILLDIR_RETURN_TYPE my_actor(struct dir_context *ctx, const char *name,
return FILLDIR_ACTOR_CONTINUE;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 8, 0)
strlcpy(data->dirpath, dirpath, DATA_PATH_LEN);
#else
strscpy(data->dirpath, dirpath, DATA_PATH_LEN);
#endif
data->depth = my_ctx->depth - 1;
list_add_tail(&data->list, my_ctx->data_path_list);
} else {
@@ -230,7 +234,11 @@ void search_manager(const char *path, int depth, struct list_head *uid_data)
// First depth
struct data_path data;
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 8, 0)
strlcpy(data.dirpath, path, DATA_PATH_LEN);
#else
strscpy(data.dirpath, path, DATA_PATH_LEN);
#endif
data.depth = depth;
list_add_tail(&data.list, &data_path_list);