From 8cb83eee5a58b1fad74c34094ce3afb9e430b5a4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 04:42:50 +0200 Subject: Adding upstream version 2.33.1. Signed-off-by: Daniel Baumann --- disk-utils/minix_programs.h | 118 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 disk-utils/minix_programs.h (limited to 'disk-utils/minix_programs.h') diff --git a/disk-utils/minix_programs.h b/disk-utils/minix_programs.h new file mode 100644 index 0000000..7ad308d --- /dev/null +++ b/disk-utils/minix_programs.h @@ -0,0 +1,118 @@ +#ifndef UTIL_LINUX_MINIX_PROGRAMS_H +#define UTIL_LINUX_MINIX_PROGRAMS_H + +#include "minix.h" + +/* + * Global variables. + */ +extern int fs_version; +extern char *super_block_buffer; + +#define Super (*(struct minix_super_block *) super_block_buffer) +#define Super3 (*(struct minix3_super_block *) super_block_buffer) + +#define INODE_SIZE (sizeof(struct minix_inode)) +#define INODE2_SIZE (sizeof(struct minix2_inode)) + +#define BITS_PER_BLOCK (MINIX_BLOCK_SIZE << 3) + +#define UPPER(size,n) ((size+((n)-1))/(n)) + +/* + * Inline functions. + */ +static inline unsigned long get_ninodes(void) +{ + switch (fs_version) { + case 3: + return Super3.s_ninodes; + default: + return Super.s_ninodes; + } +} + +static inline unsigned long get_nzones(void) +{ + switch (fs_version) { + case 3: + return Super3.s_zones; + case 2: + return Super.s_zones; + default: + return Super.s_nzones; + } +} + +static inline unsigned long get_nimaps(void) +{ + switch (fs_version) { + case 3: + return Super3.s_imap_blocks; + default: + return Super.s_imap_blocks; + } +} + +static inline unsigned long get_nzmaps(void) +{ + switch (fs_version) { + case 3: + return Super3.s_zmap_blocks; + default: + return Super.s_zmap_blocks; + } +} + +static inline off_t get_first_zone(void) +{ + switch (fs_version) { + case 3: + return Super3.s_firstdatazone; + default: + return Super.s_firstdatazone; + } +} + +static inline size_t get_zone_size(void) +{ + switch (fs_version) { + case 3: + return Super3.s_log_zone_size; + default: + return Super.s_log_zone_size; + } +} + +static inline size_t get_max_size(void) +{ + switch (fs_version) { + case 3: + return Super3.s_max_size; + default: + return Super.s_max_size; + } +} + +static inline 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 off_t first_zone_data(void) +{ + return 2 + get_nimaps() + get_nzmaps() + inode_blocks(); +} + +static inline size_t get_inode_buffer_size(void) +{ + return inode_blocks() * MINIX_BLOCK_SIZE; +} + +#endif /* UTIL_LINUX_MINIX_PROGRAMS_H */ -- cgit v1.2.3