mas01cr@400: #include "audioDB.h"
mas01cr@400: extern "C" {
mas01cr@400: #include "audioDB_API.h"
mas01cr@400: }
mas01cr@400: 
mas01cr@400: /* FIXME: we should not export this symbol to users of the library. */
mas01cr@400: int audiodb_sync_header(adb_t *adb) {
mas01cr@400:   off_t pos;
mas01cr@400:   pos = lseek(adb->fd, (off_t) 0, SEEK_CUR);
mas01cr@400:   if(pos == (off_t) -1) {
mas01cr@400:     goto error;
mas01cr@400:   }
mas01cr@400:   if(lseek(adb->fd, (off_t) 0, SEEK_SET) == (off_t) -1) {
mas01cr@400:     goto error;
mas01cr@400:   }
mas01cr@400:   if(write(adb->fd, adb->header, O2_HEADERSIZE) != O2_HEADERSIZE) {
mas01cr@400:     goto error;
mas01cr@400:   }
mas01cr@400: 
mas01cr@400:   /* can be fsync() if fdatasync() is racily exciting and new */
mas01cr@400:   fdatasync(adb->fd);
mas01cr@400:   if(lseek(adb->fd, pos, SEEK_SET) == (off_t) -1) {
mas01cr@400:     goto error;
mas01cr@400:   }
mas01cr@400:   return 0;
mas01cr@400: 
mas01cr@400:  error:
mas01cr@400:   return 1;
mas01cr@400: }
mas01cr@400: 
mas01cr@400: int audiodb_power(adb_t *adb) {
mas01cr@400:   /* FIXME: we should probably include in adb_t information about
mas01cr@400:    * which mode (O_RDONLY|O_RDWR) the database was opened, so that we
mas01cr@400:    * can check that it's writeable. */
mas01cr@400:   if(adb->header->length > 0) {
mas01cr@400:     return 1;
mas01cr@400:   }
mas01cr@400: 
mas01cr@400:   adb->header->flags |= O2_FLAG_POWER;
mas01cr@400:   return audiodb_sync_header(adb);
mas01cr@400: }