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fs/kernel_read_file: Remove redundant size argument

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In preparation for refactoring kernel_read_file*(), remove the redundant
"size" argument which is not needed: it can be included in the return
code, with callers adjusted. (VFS reads already cannot be larger than
INT_MAX.)

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Link: https://lore.kernel.org/r/20201002173828.2099543-6-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kees Cook
2020-10-02 10:38:17 -07:00
committed by Greg Kroah-Hartman
parent 5287b07f6d
commit f7a4f689bc
7 changed files with 36 additions and 34 deletions
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8
include/linux/kernel_read_file.h
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@@ -36,16 +36,16 @@ static inline const char *kernel_read_file_id_str(enum kernel_read_file_id id)
}
int kernel_read_file(struct file *file,
void **buf, loff_t *size, loff_t max_size,
void **buf, loff_t max_size,
enum kernel_read_file_id id);
int kernel_read_file_from_path(const char *path,
void **buf, loff_t *size, loff_t max_size,
void **buf, loff_t max_size,
enum kernel_read_file_id id);
int kernel_read_file_from_path_initns(const char *path,
void **buf, loff_t *size, loff_t max_size,
void **buf, loff_t max_size,
enum kernel_read_file_id id);
int kernel_read_file_from_fd(int fd,
void **buf, loff_t *size, loff_t max_size,
void **buf, loff_t max_size,
enum kernel_read_file_id id);
#endif /* _LINUX_KERNEL_READ_FILE_H */