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util-linux调试

裴学
2023-12-01

Debian下调试util-linux

通过dpkg-buildpackage覆盖编译选项,按照-g -O0编译

cat /etc/dpkg/buildflags.conf 
SET CFLAGS -g -O0 -fdebug-prefix-map=/home/uos/work/util-linux/gerrit/util-linux=. -fstack-protector-strong -Wformat -Werror=format-security
SET CXXFLAGS -g -O0 -fdebug-prefix-map=/home/uos/work/util-linux/gerrit/util-linux=. -fstack-protector-strong -Wformat -Werror=format-security
SET FCFLAGS -g -O0 -fdebug-prefix-map=/home/uos/work/util-linux/gerrit/util-linux=. -fstack-protector-strong
SET FFLAGS -g -O0 -fdebug-prefix-map=/home/uos/work/util-linux/gerrit/util-linux=. -fstack-protector-strong
SET GCJFLAGS -g -O0 -fdebug-prefix-map=/home/uos/work/util-linux/gerrit/util-linux=. -fstack-protector-strong
SET OBJCFLAGS -g -O0 -fdebug-prefix-map=/home/uos/work/util-linux/gerrit/util-linux=. -fstack-protector-strong -Wformat -Werror=format-security
SET OBJCXXFLAGS -g -O0 -fdebug-prefix-map=/home/uos/work/util-linux/gerrit/util-linux=. -fstack-protector-strong -Wformat -Werror=format-security

配置环境变量nostrip

export DEB_BUILD_OPTIONS=nostrip

配置日志等级

export LIBBLKID_DEBUG=all
   all      [0xffff] : info about all subsystems
   cache    [0x0004] : blkid tags cache
   config   [0x0008] : config file utils
   dev      [0x0010] : device utils
   devname  [0x0020] : /proc/partitions evaluation
   devno    [0x0040] : conversions to device name
   evaluate [0x0080] : tags resolving
   help     [0x0001] : this help
   lowprobe [0x0100] : superblock/raids/partitions probing
   buffer   [0x2000] : low-probing buffers
   probe    [0x0200] : devices verification
   read     [0x0400] : cache parsing
   save     [0x0800] : cache writing
   tag      [0x1000] : tags utils
参考源码中Documentation/howto-debug.txt
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