b1d068470b
isofs now uses an in-memory directory listing built on-the-fly instead of parsing the ISO 9660 data structures over and over for almost every request. This yields huge performance improvements. The directory listing is allocated dynamically, but Minix servers aren't normally supposed to do that because critical servers would crash if the system runs out of memory. isofs is quite frugal, won't allocate memory after having the whole directory tree cached and is not that critical (its most important job is to serve as a root file system during installation). The benefits and elegance of this scheme far outweights this small problem in practice. Change-Id: I13d070388c07d274cbee0645cbc50295c447c5b6
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
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#define GETDENTS_BUFSIZ 1024
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#define ISO9660_STANDARD_ID "CD001" /* Standard code for ISO9660 FS */
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/* Filesystem options support */
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#define ISO9660_OPTION_ROCKRIDGE
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/* TODO: Make MODE3 working. */
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/*#define ISO9660_OPTION_MODE3*/
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/* Below there are constant of the ISO9660 fs */
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#define ISO9660_SUPER_BLOCK_POSITION 32768
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#define ISO9660_MIN_BLOCK_SIZE 2048
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/* SIZES FIELDS ISO9660 STRUCTURES */
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#define ISO9660_SIZE_STANDARD_ID 5
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#define ISO9660_SIZE_BOOT_SYS_ID 32
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#define ISO9660_SIZE_BOOT_ID 32
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#define ISO9660_SIZE_SYS_ID 32
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#define ISO9660_SIZE_VOLUME_ID 32
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#define ISO9660_SIZE_VOLUME_SET_ID 128
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#define ISO9660_SIZE_PUBLISHER_ID 128
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#define ISO9660_SIZE_DATA_PREP_ID 128
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#define ISO9660_SIZE_APPL_ID 128
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#define ISO9660_SIZE_COPYRIGHT_FILE_ID 37
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#define ISO9660_SIZE_ABSTRACT_FILE_ID 37
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#define ISO9660_SIZE_BIBL_FILE_ID 37
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#define ISO9660_SIZE_DATE17 17
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#define ISO9660_SIZE_DATE7 7
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#define ISO9660_SIZE_ESCAPE_SQC 32
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#define ISO9660_SIZE_PART_ID 32
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#define ISO9660_SIZE_SYSTEM_USE 64
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/* maximum size of length of name file used in dir records */
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#define ISO9660_MAX_FILE_ID_LEN 32
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#define ISO9660_RRIP_MAX_FILE_ID_LEN 256
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/* Miscellaneous constants */
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#define SYS_UID ((uid_t) 0) /* uid_t for processes PM and INIT */
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#define SYS_GID ((gid_t) 0) /* gid_t for processes PM and INIT */
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