diff options
Diffstat (limited to 'libdiskfs')
| -rw-r--r-- | libdiskfs/diskfs.h | 50 |
1 files changed, 34 insertions, 16 deletions
diff --git a/libdiskfs/diskfs.h b/libdiskfs/diskfs.h index 3ae8d086..f2adf255 100644 --- a/libdiskfs/diskfs.h +++ b/libdiskfs/diskfs.h @@ -113,20 +113,20 @@ struct dirmod /* Declarations of variables the library sets. */ -extern mach_port_t diskfs_host_priv; /* send right */ -extern mach_port_t diskfs_master_device; /* send right */ extern mach_port_t diskfs_default_pager; /* send right */ extern mach_port_t diskfs_exec_ctl; /* send right */ extern mach_port_t diskfs_exec; /* send right */ extern auth_t diskfs_auth_server_port; /* send right */ +/* When this is a bootstrap filesystem, the command line options passed from + the kernel. If not a bootstrap filesystem, it is 0, so it can be used to + distinguish between the two cases. */ +extern char *diskfs_boot_flags; + extern struct mutex diskfs_shutdown_lock; extern volatile struct mapped_time_value *diskfs_mtime; -extern int diskfs_bootflags; -extern char *diskfs_bootflagarg; - /* True iff we should do every operation synchronously. It is the format-specific code's responsibility to keep allocation information permanently in sync if this is set; the rest will @@ -462,19 +462,37 @@ error_t (*diskfs_read_symlink_hook)(struct node *np, char *target); /* The library exports the following functions for general use */ -/* Call this if the bootstrap port is null and you want to support - being a bootstrap filesystem. ARGC and ARGV should be as passed - to main. If the arguments are not in the proper format, an - error message will be printed on stderr and exit called. Otherwise, - diskfs_priv_host, diskfs_master_device, and diskfs_bootflags will be - set and the Mach kernel name of the bootstrap device will be - returned. */ -char *diskfs_parse_bootargs (int argc, char **argv); +/* Returns the name and a send right for the mach device on which the file + NAME is stored, and returns it in DEV_NAME (which is malloced) and PORT. + Other values returned are START, the first valid offset, SIZE, the the + number of blocks after START, and BLOCK_SIZE, the units in which the + device is addressed. + + The device is opened for reading, and if the diskfs global variable + DISKFS_READONLY is false, writing. */ +error_t diskfs_get_file_device (char *name, + char **dev_name, mach_port_t *port, + off_t *start, off_t *size, size_t *block_size); + +/* Returns a send right to for the mach device called NAME, and returns it in + PORT. Other values returned are START, the first valid offset, SIZE, the + the number of blocks after START, and BLOCK_SIZE, the units in which the + device is addressed. + + The device is opened for reading, and if the diskfs global variable + DISKFS_READ_ONLY is false, writing. + + If NAME cannot be opened and this is a bootstrap filesystem, the user will + be prompted for new names until a valid one is found. */ +error_t diskfs_get_mach_device (char *name, + mach_port_t *port, + off_t *start, off_t *size, size_t *block_size); + /* Call this after arguments have been parsed to initialize the library. - You must call this before calling any other diskfs functions except - for diskfs_parse_bootargs. */ -void diskfs_init_diskfs (void); + You must call this before calling any other diskfs functions, and after + parsing diskfs options. */ +error_t diskfs_init_diskfs (void); /* Call this once the filesystem is fully initialized, to advertise the new filesystem control port to our parent filesystem. If BOOTSTRAP is set, |