Vhex-kernel/src/kernel/fs/vfs/file/read.c

23 lines
572 B
C

#include <kernel/fs/vfs.h>
#include <kernel/util.h>
ssize_t vfs_read(FILE *file, void *buf, size_t count)
{
//TODO: Check permission !!
// Check error
if (file == NULL || buf == NULL)
return (-1);
// Get / check file's informations
if (file->private == NULL || file->file_op->read == NULL)
return (-1);
// Read with FS specifique primitive and return the numbe of reading bytes.
memset(buf, 0x00, count);
ssize_t read = file->file_op->read(file->private, buf, count, file->cursor);
if (read != -1)
file->cursor = file->cursor + read;
return (read);
}