diff options
Diffstat (limited to 'disk-utils/minix_programs.h')
-rw-r--r-- | disk-utils/minix_programs.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/disk-utils/minix_programs.h b/disk-utils/minix_programs.h new file mode 100644 index 000000000..3e6c649ac --- /dev/null +++ b/disk-utils/minix_programs.h @@ -0,0 +1,113 @@ +#ifndef UTIL_LINUX_MINIX_PROGRAMS_H +#define UTIL_LINUX_MINIX_PROGRAMS_H + +#include "minix.h" + +/* + * Global variables. + */ +static int fs_version = 1; /* this default value needs to change in a near future */ + +static char *super_block_buffer; +static char *inode_buffer = NULL; + +static char *inode_map; +static char *zone_map; + +/* + * Inline functions. + */ +static inline unsigned long get_ninodes(void) +{ + switch (fs_version) { + case 3: + return Super3.s_ninodes; + default: + return (unsigned long)Super.s_ninodes; + } +} + +static inline unsigned long get_nzones(void) +{ + switch (fs_version) { + case 3: + return (unsigned long)Super3.s_zones; + case 2: + return (unsigned long)Super.s_zones; + default: + return (unsigned long)Super.s_nzones; + } +} + +static inline unsigned long get_nimaps(void) +{ + switch (fs_version) { + case 3: + return (unsigned long)Super3.s_imap_blocks; + default: + return (unsigned long)Super.s_imap_blocks; + } +} + +static inline unsigned long get_nzmaps(void) +{ + switch (fs_version) { + case 3: + return (unsigned long)Super3.s_zmap_blocks; + default: + return (unsigned long)Super.s_zmap_blocks; + } +} + +static inline unsigned long get_first_zone(void) +{ + switch (fs_version) { + case 3: + return (unsigned long)Super3.s_firstdatazone; + default: + return (unsigned long)Super.s_firstdatazone; + } +} + +static inline unsigned long get_zone_size(void) +{ + switch (fs_version) { + case 3: + return (unsigned long)Super3.s_log_zone_size; + default: + return (unsigned long)Super.s_log_zone_size; + } +} + +static inline unsigned long get_max_size(void) +{ + switch (fs_version) { + case 3: + return (unsigned long)Super3.s_max_size; + default: + return (unsigned long)Super.s_max_size; + } +} + +static unsigned long inode_blocks(void) +{ + switch (fs_version) { + case 3: + case 2: + return UPPER(get_ninodes(), MINIX2_INODES_PER_BLOCK); + default: + return UPPER(get_ninodes(), MINIX_INODES_PER_BLOCK); + } +} + +static inline unsigned long first_zone_data(void) +{ + return 2 + get_nimaps() + get_nzmaps() + inode_blocks(); +} + +static inline unsigned long get_inode_buffer_size(void) +{ + return inode_blocks() * MINIX_BLOCK_SIZE; +} + +#endif /* UTIL_LINUX_MINIX_PROGRAMS_H */ |