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Diffstat (limited to 'Utilities/cmlibarchive/libarchive/libarchive-formats.5')
| -rw-r--r-- | Utilities/cmlibarchive/libarchive/libarchive-formats.5 | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/Utilities/cmlibarchive/libarchive/libarchive-formats.5 b/Utilities/cmlibarchive/libarchive/libarchive-formats.5 index 62359dd..5a118ff 100644 --- a/Utilities/cmlibarchive/libarchive/libarchive-formats.5 +++ b/Utilities/cmlibarchive/libarchive/libarchive-formats.5 @@ -201,28 +201,27 @@ POSIX.1-2001 extended the ustar format to create the .Dq pax interchange format. .Ss Cpio Formats -The libarchive library can read a number of common cpio variants and can write -.Dq odc -and -.Dq newc -format archives. -A cpio archive stores each entry as a fixed-size header followed -by a variable-length filename and variable-length data. -Unlike the tar format, the cpio format does only minimal padding -of the header or file data. -There are several cpio variants, which differ primarily in -how they store the initial header: some store the values as -octal or hexadecimal numbers in ASCII, others as binary values of -varying byte order and length. +The libarchive library can read and write a number of common cpio +variants. A cpio archive stores each entry as a fixed-size header +followed by a variable-length filename and variable-length data. +Unlike the tar format, the cpio format does only minimal padding of +the header or file data. There are several cpio variants, which +differ primarily in how they store the initial header: some store the +values as octal or hexadecimal numbers in ASCII, others as binary +values of varying byte order and length. .Bl -tag -width indent .It Cm binary -The libarchive library transparently reads both big-endian and little-endian -variants of the original binary cpio format. -This format used 32-bit binary values for file size and mtime, -and 16-bit binary values for the other fields. +The libarchive library transparently reads both big-endian and +little-endian variants of the the two binary cpio formats; the +original one from PWB/UNIX, and the later, more widely used, variant. +This format used 32-bit binary values for file size and mtime, and +16-bit binary values for the other fields. The formats support only +the file types present in UNIX at the time of their creation. File +sizes are limited to 24 bits in the PWB format, because of the limits +of the file system, and to 31 bits in the newer binary format, where +signed 32 bit longs were used. .It Cm odc -The libarchive library can both read and write this -POSIX-standard format, which is officially known as the +This is the POSIX standardized format, which is officially known as the .Dq cpio interchange format or the .Dq octet-oriented cpio archive format |