/* vi: set sw=4 ts=4: */ /* * io_manager.c --- the I/O manager abstraction */ #include <stdio.h> #include <string.h> #if HAVE_UNISTD_H #include <unistd.h> #endif #include <fcntl.h> #include <time.h> #if HAVE_SYS_STAT_H #include <sys/stat.h> #endif #if HAVE_SYS_TYPES_H #include <sys/types.h> #endif #include "ext2_fs.h" #include "ext2fs.h" errcode_t io_channel_set_options(io_channel channel, const char *opts) { errcode_t retval = 0; char *next, *ptr, *options, *arg; EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL); if (!opts) return 0; if (!channel->manager->set_option) return EXT2_ET_INVALID_ARGUMENT; options = malloc(strlen(opts)+1); if (!options) return EXT2_ET_NO_MEMORY; strcpy(options, opts); ptr = options; while (ptr && *ptr) { next = strchr(ptr, '&'); if (next) *next++ = 0; arg = strchr(ptr, '='); if (arg) *arg++ = 0; retval = (channel->manager->set_option)(channel, ptr, arg); if (retval) break; ptr = next; } free(options); return retval; } errcode_t io_channel_write_byte(io_channel channel, unsigned long offset, int count, const void *data) { EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL); if (channel->manager->write_byte) return channel->manager->write_byte(channel, offset, count, data); return EXT2_ET_UNIMPLEMENTED; }