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master
magic/Magdir/sysstat
42 строки
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Christos Zoulas
PR/174: Nathan Scott: Add sysstat sar data file detection
25 июн 2026, 01:10
25 июн 2026, 01:10
61d32c4
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#------------------------------------------------------------------------------ # $File: sysstat,v 1.1 2026/06/24 22:10:05 christos Exp $ # sysstat: file(1) magic for sysstat system activity data files (sar/sadc) # # URL: https://github.com/sysstat/sysstat # Reference: sysstat sa.h struct file_magic / file_header # # file_magic layout (all fields in native byte order of the recording host): # offset 0: sysstat_magic uint16 = 0xd596 # offset 2: format_magic uint16 = 0x2175 (current), 0x2173, 0x2171 (older) # # file_header begins at offset 76 (FILE_MAGIC_SIZE). # sa_nodename (hostname, char[65]) is at file_header offset 132, # giving absolute file offset 208. This offset is arch-independent # because __attribute__((aligned(8))) on sa_hz and sa_cpu_nr produces # identical struct layout on both 32-bit and 64-bit hosts. # Little-endian hosts (x86, ARM, etc.) — bytes 0-3: 96 d5 <fmt_lo> <fmt_hi> 0 lelong 0x2175d596 sysstat sar data >2 leshort x (format 0x%x) >208 string >\0 \b, host: %s 0 lelong 0x2173d596 sysstat sar data >2 leshort x (format 0x%x) >208 string >\0 \b, host: %s 0 lelong 0x2171d596 sysstat sar data >2 leshort x (format 0x%x) >208 string >\0 \b, host: %s # Big-endian hosts (SPARC, PowerPC, etc.) — bytes 0-3: d5 96 <fmt_hi> <fmt_lo> 0 belong 0xd5962175 sysstat sar data (big-endian) >2 beshort x (format 0x%x) >208 string >\0 \b, host: %s 0 belong 0xd5962173 sysstat sar data (big-endian) >2 beshort x (format 0x%x) >208 string >\0 \b, host: %s 0 belong 0xd5962171 sysstat sar data (big-endian) >2 beshort x (format 0x%x) >208 string >\0 \b, host: %s