mirror of https://github.com/vitalif/e2fsprogs
e2fsck: catch termination signals and print information about them
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>bitmap-optimize
Theodore Ts'o
parent
9c79612f21
commit
9b3018a82e
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@ -59,6 +59,7 @@ ALL_LDFLAGS = $(LDFLAGS) @LDFLAG_DYNAMIC@
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LDFLAGS_STATIC = $(LDFLAGS) @LDFLAG_STATIC@
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BUILD_CFLAGS = @BUILD_CFLAGS@
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BUILD_LDFLAGS = @BUILD_LDFLAGS@
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RDYNAMIC = @RDYNAMIC@
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LINK_BUILD_FLAGS = @LINK_BUILD_FLAGS@
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LINK_INSTALL_FLAGS = @LINK_INSTALL_FLAGS@
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RM = @RM@
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@ -712,6 +712,7 @@ LINUX_INCLUDE
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EGREP
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GREP
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CPP
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RDYNAMIC
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DLOPEN_LIB
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OBJEXT
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EXEEXT
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@ -4157,6 +4158,10 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
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ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
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ac_compiler_gnu=$ac_cv_c_compiler_gnu
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if test "$GCC" = yes; then
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RDYNAMIC="-rdynamic"
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fi
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ac_ext=c
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ac_cpp='$CPP $CPPFLAGS'
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ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
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@ -10086,7 +10091,7 @@ fi
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done
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fi
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for ac_header in dirent.h errno.h getopt.h malloc.h mntent.h paths.h semaphore.h setjmp.h signal.h stdarg.h stdint.h stdlib.h termios.h termio.h unistd.h utime.h linux/fd.h linux/major.h net/if_dl.h netinet/in.h sys/disklabel.h sys/file.h sys/ioctl.h sys/mkdev.h sys/mman.h sys/prctl.h sys/queue.h sys/resource.h sys/select.h sys/socket.h sys/sockio.h sys/stat.h sys/syscall.h sys/sysmacros.h sys/time.h sys/types.h sys/un.h sys/wait.h
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for ac_header in dirent.h errno.h execinfo.h getopt.h malloc.h mntent.h paths.h semaphore.h setjmp.h signal.h stdarg.h stdint.h stdlib.h termios.h termio.h unistd.h utime.h linux/fd.h linux/major.h net/if_dl.h netinet/in.h sys/disklabel.h sys/file.h sys/ioctl.h sys/mkdev.h sys/mman.h sys/prctl.h sys/queue.h sys/resource.h sys/select.h sys/socket.h sys/sockio.h sys/stat.h sys/syscall.h sys/sysmacros.h sys/time.h sys/types.h sys/un.h sys/wait.h
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do :
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as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
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ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
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@ -10723,7 +10728,7 @@ if test "$ac_res" != no; then :
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fi
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fi
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for ac_func in chflags getrusage llseek lseek64 open64 fstat64 ftruncate64 getmntinfo strtoull strcasecmp srandom jrand48 fchown mallinfo fdatasync strnlen strptime strdup sysconf pathconf posix_memalign memalign valloc __secure_getenv prctl mmap utime setresuid setresgid usleep nanosleep getdtablesize getrlimit sync_file_range posix_fadvise fallocate fallocate64 blkid_probe_get_topology mbstowcs
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for ac_func in chflags getrusage llseek lseek64 open64 fstat64 ftruncate64 getmntinfo strtoull strcasecmp srandom jrand48 fchown mallinfo fdatasync strnlen strptime strdup sysconf pathconf posix_memalign memalign valloc __secure_getenv prctl mmap utime setresuid setresgid usleep nanosleep getdtablesize getrlimit sync_file_range posix_fadvise fallocate fallocate64 blkid_probe_get_topology mbstowcs backtrace
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do :
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as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
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ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
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@ -93,6 +93,10 @@ AC_HELP_STRING([--with-ldopts],[no longer supported, use LDFLAGS= instead]),
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AC_MSG_ERROR([--with-ldopts no longer supported; use LDFLAGS= instead]))
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dnl
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AC_PROG_CC
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if test "$GCC" = yes; then
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RDYNAMIC="-rdynamic"
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AC_SUBST(RDYNAMIC)
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fi
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AC_PROG_CPP
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dnl
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dnl On systems without linux header files, we add an extra include directory
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@ -747,7 +751,7 @@ if test $cross_compiling = no; then
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else
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AC_CHECK_PROGS(BUILD_CC, gcc cc)
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fi
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AC_CHECK_HEADERS(dirent.h errno.h getopt.h malloc.h mntent.h paths.h semaphore.h setjmp.h signal.h stdarg.h stdint.h stdlib.h termios.h termio.h unistd.h utime.h linux/fd.h linux/major.h net/if_dl.h netinet/in.h sys/disklabel.h sys/file.h sys/ioctl.h sys/mkdev.h sys/mman.h sys/prctl.h sys/queue.h sys/resource.h sys/select.h sys/socket.h sys/sockio.h sys/stat.h sys/syscall.h sys/sysmacros.h sys/time.h sys/types.h sys/un.h sys/wait.h)
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AC_CHECK_HEADERS(dirent.h errno.h execinfo.h getopt.h malloc.h mntent.h paths.h semaphore.h setjmp.h signal.h stdarg.h stdint.h stdlib.h termios.h termio.h unistd.h utime.h linux/fd.h linux/major.h net/if_dl.h netinet/in.h sys/disklabel.h sys/file.h sys/ioctl.h sys/mkdev.h sys/mman.h sys/prctl.h sys/queue.h sys/resource.h sys/select.h sys/socket.h sys/sockio.h sys/stat.h sys/syscall.h sys/sysmacros.h sys/time.h sys/types.h sys/un.h sys/wait.h)
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AC_CHECK_HEADERS(sys/disk.h sys/mount.h,,,
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[[
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#if HAVE_SYS_QUEUE_H
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@ -871,7 +875,7 @@ if test -n "$BLKID_CMT"; then
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AC_SEARCH_LIBS([blkid_probe_all], [blkid])
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fi
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dnl
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AC_CHECK_FUNCS(chflags getrusage llseek lseek64 open64 fstat64 ftruncate64 getmntinfo strtoull strcasecmp srandom jrand48 fchown mallinfo fdatasync strnlen strptime strdup sysconf pathconf posix_memalign memalign valloc __secure_getenv prctl mmap utime setresuid setresgid usleep nanosleep getdtablesize getrlimit sync_file_range posix_fadvise fallocate fallocate64 blkid_probe_get_topology mbstowcs)
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AC_CHECK_FUNCS(chflags getrusage llseek lseek64 open64 fstat64 ftruncate64 getmntinfo strtoull strcasecmp srandom jrand48 fchown mallinfo fdatasync strnlen strptime strdup sysconf pathconf posix_memalign memalign valloc __secure_getenv prctl mmap utime setresuid setresgid usleep nanosleep getdtablesize getrlimit sync_file_range posix_fadvise fallocate fallocate64 blkid_probe_get_topology mbstowcs backtrace)
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dnl
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dnl Check to see if -lsocket is required (solaris) to make something
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dnl that uses socket() to compile; this is needed for the UUID library
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@ -64,7 +64,8 @@ COMPILE_ET=$(top_builddir)/lib/et/compile_et --build-tree
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OBJS= crc32.o dict.o unix.o e2fsck.o super.o pass1.o pass1b.o pass2.o \
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pass3.o pass4.o pass5.o journal.o badblocks.o util.o dirinfo.o \
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dx_dirinfo.o ehandler.o problem.o message.o recovery.o region.o \
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revoke.o ea_refcount.o rehash.o profile.o prof_err.o $(MTRACE_OBJ)
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revoke.o ea_refcount.o rehash.o profile.o prof_err.o sigcatcher.o \
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$(MTRACE_OBJ)
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PROFILED_OBJS= profiled/dict.o profiled/unix.o profiled/e2fsck.o \
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profiled/super.o profiled/pass1.o profiled/pass1b.o \
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@ -74,7 +75,7 @@ PROFILED_OBJS= profiled/dict.o profiled/unix.o profiled/e2fsck.o \
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profiled/message.o profiled/problem.o \
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profiled/recovery.o profiled/region.o profiled/revoke.o \
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profiled/ea_refcount.o profiled/rehash.o profiled/profile.o \
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profiled/crc32.o profiled/prof_err.o
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profiled/crc32.o profiled/prof_err.o profiled/sigcatcher.o
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SRCS= $(srcdir)/e2fsck.c \
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$(srcdir)/crc32.c \
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@ -102,6 +103,7 @@ SRCS= $(srcdir)/e2fsck.c \
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$(srcdir)/rehash.c \
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$(srcdir)/region.c \
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$(srcdir)/profile.c \
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$(srcdir)/sigcatcher.c \
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prof_err.c \
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$(MTRACE_SRC)
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@ -115,7 +117,7 @@ prof_err.c prof_err.h: prof_err.et
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e2fsck: $(OBJS) $(DEPLIBS)
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$(E) " LD $@"
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$(Q) $(LD) $(ALL_LDFLAGS) -o e2fsck $(OBJS) $(LIBS)
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$(Q) $(LD) $(ALL_LDFLAGS) $(RDYNAMIC) -o e2fsck $(OBJS) $(LIBS)
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e2fsck.static: $(OBJS) $(STATIC_DEPLIBS)
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$(E) " LD $@"
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@ -135,6 +137,10 @@ crc32table.h: gen_crc32table
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$(E) " GEN32TABLE $@"
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$(Q) ./gen_crc32table > crc32table.h
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tst_sigcatcher: $(srcdir)/sigcatcher.c
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$(Q) $(CC) $(BUILD_LDFLAGS) $(ALL_CFLAGS) $(RDYNAMIC) \
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$(srcdir)/sigcatcher.c -DDEBUG -o tst_sigcatcher
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tst_problem: $(srcdir)/problem.c $(srcdir)/problem.h $(LIBEXT2FS) \
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$(DEPLIBCOM_ERR)
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$(Q) $(CC) $(BUILD_LDFLAGS) $(ALL_CFLAGS) -o tst_problem \
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@ -438,4 +444,11 @@ region.o: $(srcdir)/region.c $(srcdir)/e2fsck.h \
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$(srcdir)/profile.h prof_err.h
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profile.o: $(srcdir)/profile.c $(top_srcdir)/lib/et/com_err.h \
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$(srcdir)/profile.h prof_err.h
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sigcatcher.o: $(srcdir)/sigcatcher.c $(srcdir)/e2fsck.h \
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$(top_srcdir)/lib/ext2fs/ext2_fs.h $(top_builddir)/lib/ext2fs/ext2_types.h \
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$(top_srcdir)/lib/ext2fs/ext2fs.h $(top_srcdir)/lib/ext2fs/ext3_extents.h \
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$(top_srcdir)/lib/et/com_err.h $(top_srcdir)/lib/ext2fs/ext2_io.h \
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$(top_builddir)/lib/ext2fs/ext2_err.h \
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$(top_srcdir)/lib/ext2fs/ext2_ext_attr.h $(top_srcdir)/lib/ext2fs/bitops.h \
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$(srcdir)/profile.h prof_err.h
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prof_err.o: prof_err.c
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@ -475,6 +475,9 @@ extern int region_allocate(region_t region, region_addr_t start, int n);
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errcode_t e2fsck_rehash_dir(e2fsck_t ctx, ext2_ino_t ino);
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void e2fsck_rehash_directories(e2fsck_t ctx);
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/* sigcatcher.c */
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void sigcatcher_setup(void);
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/* super.c */
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void check_super_block(e2fsck_t ctx);
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int check_backup_super_block(e2fsck_t ctx);
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@ -0,0 +1,275 @@
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/*
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* sigcatcher.c --- print a backtrace on a SIGSEGV, et. al
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*
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* Copyright (C) 2011 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <string.h>
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#ifdef HAVE_EXECINFO_H
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#include <execinfo.h>
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#endif
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#include "e2fsck.h"
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struct str_table {
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int num;
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const char *name;
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};
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#define DEFINE_ENTRY(SYM) { SYM, #SYM },
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#define END_TABLE { 0, 0 }
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static struct str_table sig_table[] = {
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DEFINE_ENTRY(SIGHUP)
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DEFINE_ENTRY(SIGINT)
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DEFINE_ENTRY(SIGQUIT)
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DEFINE_ENTRY(SIGILL)
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DEFINE_ENTRY(SIGTRAP)
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DEFINE_ENTRY(SIGABRT)
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DEFINE_ENTRY(SIGIOT)
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DEFINE_ENTRY(SIGBUS)
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DEFINE_ENTRY(SIGFPE)
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DEFINE_ENTRY(SIGKILL)
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DEFINE_ENTRY(SIGUSR1)
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DEFINE_ENTRY(SIGSEGV)
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DEFINE_ENTRY(SIGUSR2)
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DEFINE_ENTRY(SIGPIPE)
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DEFINE_ENTRY(SIGALRM)
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DEFINE_ENTRY(SIGTERM)
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DEFINE_ENTRY(SIGSTKFLT)
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DEFINE_ENTRY(SIGCHLD)
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DEFINE_ENTRY(SIGCONT)
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DEFINE_ENTRY(SIGSTOP)
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DEFINE_ENTRY(SIGTSTP)
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DEFINE_ENTRY(SIGTTIN)
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DEFINE_ENTRY(SIGTTOU)
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DEFINE_ENTRY(SIGURG)
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DEFINE_ENTRY(SIGXCPU)
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DEFINE_ENTRY(SIGXFSZ)
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DEFINE_ENTRY(SIGVTALRM)
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DEFINE_ENTRY(SIGPROF)
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DEFINE_ENTRY(SIGWINCH)
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DEFINE_ENTRY(SIGIO)
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DEFINE_ENTRY(SIGPOLL)
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DEFINE_ENTRY(SIGPWR)
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DEFINE_ENTRY(SIGSYS)
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END_TABLE
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};
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static struct str_table generic_code_table[] = {
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DEFINE_ENTRY(SI_ASYNCNL)
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DEFINE_ENTRY(SI_TKILL)
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DEFINE_ENTRY(SI_SIGIO)
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DEFINE_ENTRY(SI_ASYNCIO)
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DEFINE_ENTRY(SI_MESGQ)
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DEFINE_ENTRY(SI_TIMER)
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DEFINE_ENTRY(SI_QUEUE)
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DEFINE_ENTRY(SI_USER)
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DEFINE_ENTRY(SI_KERNEL)
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END_TABLE
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};
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static struct str_table sigill_code_table[] = {
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DEFINE_ENTRY(ILL_ILLOPC)
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DEFINE_ENTRY(ILL_ILLOPN)
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DEFINE_ENTRY(ILL_ILLADR)
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DEFINE_ENTRY(ILL_ILLTRP)
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DEFINE_ENTRY(ILL_PRVOPC)
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DEFINE_ENTRY(ILL_PRVREG)
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DEFINE_ENTRY(ILL_COPROC)
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DEFINE_ENTRY(ILL_BADSTK)
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DEFINE_ENTRY(BUS_ADRALN)
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DEFINE_ENTRY(BUS_ADRERR)
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DEFINE_ENTRY(BUS_OBJERR)
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END_TABLE
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};
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static struct str_table sigfpe_code_table[] = {
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DEFINE_ENTRY(FPE_INTDIV)
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DEFINE_ENTRY(FPE_INTOVF)
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DEFINE_ENTRY(FPE_FLTDIV)
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DEFINE_ENTRY(FPE_FLTOVF)
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DEFINE_ENTRY(FPE_FLTUND)
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DEFINE_ENTRY(FPE_FLTRES)
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DEFINE_ENTRY(FPE_FLTINV)
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DEFINE_ENTRY(FPE_FLTSUB)
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END_TABLE
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};
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static struct str_table sigsegv_code_table[] = {
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DEFINE_ENTRY(SEGV_MAPERR)
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DEFINE_ENTRY(SEGV_ACCERR)
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END_TABLE
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};
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static struct str_table sigbus_code_table[] = {
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DEFINE_ENTRY(BUS_ADRALN)
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DEFINE_ENTRY(BUS_ADRERR)
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DEFINE_ENTRY(BUS_OBJERR)
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END_TABLE
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};
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static struct str_table sigstrap_code_table[] = {
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DEFINE_ENTRY(TRAP_BRKPT)
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DEFINE_ENTRY(TRAP_TRACE)
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END_TABLE
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};
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static struct str_table sigcld_code_table[] = {
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DEFINE_ENTRY(CLD_EXITED)
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DEFINE_ENTRY(CLD_KILLED)
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DEFINE_ENTRY(CLD_DUMPED)
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DEFINE_ENTRY(CLD_TRAPPED)
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DEFINE_ENTRY(CLD_STOPPED)
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DEFINE_ENTRY(CLD_CONTINUED)
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END_TABLE
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};
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static struct str_table sigpoll_code_table[] = {
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DEFINE_ENTRY(POLL_IN)
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DEFINE_ENTRY(POLL_OUT)
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DEFINE_ENTRY(POLL_MSG)
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DEFINE_ENTRY(POLL_ERR)
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DEFINE_ENTRY(POLL_PRI)
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DEFINE_ENTRY(POLL_HUP)
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END_TABLE
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};
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static const char *lookup_table(int num, struct str_table *table)
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{
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struct str_table *p;
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for (p=table; p->name; p++)
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if (num == p->num)
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return(p->name);
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return NULL;
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}
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static const char *lookup_table_fallback(int num, struct str_table *table)
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{
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static char buf[32];
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const char *ret = lookup_table(num, table);
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if (ret)
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return ret;
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snprintf(buf, sizeof(buf), "%d", num);
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buf[sizeof(buf)-1] = 0;
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return buf;
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}
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static void die_signal_handler(int signum, siginfo_t *siginfo, void *context)
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{
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void *stack_syms[32];
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int frames;
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const char *cp;
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fprintf(stderr, "Signal (%d) %s ", signum,
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lookup_table_fallback(signum, sig_table));
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if (siginfo->si_code == SI_USER)
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fprintf(stderr, "(sent from pid %u) ", siginfo->si_pid);
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cp = lookup_table(siginfo->si_code, generic_code_table);
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if (cp)
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fprintf(stderr, "si_code=%s ", cp);
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else if (signum == SIGILL)
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fprintf(stderr, "si_code=%s ",
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lookup_table_fallback(siginfo->si_code,
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sigill_code_table));
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else if (signum == SIGFPE)
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fprintf(stderr, "si_code=%s ",
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lookup_table_fallback(siginfo->si_code,
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sigfpe_code_table));
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else if (signum == SIGSEGV)
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fprintf(stderr, "si_code=%s ",
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lookup_table_fallback(siginfo->si_code,
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sigsegv_code_table));
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else if (signum == SIGBUS)
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fprintf(stderr, "si_code=%s ",
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lookup_table_fallback(siginfo->si_code,
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sigbus_code_table));
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else if (signum == SIGCLD)
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fprintf(stderr, "si_code=%s ",
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lookup_table_fallback(siginfo->si_code,
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sigcld_code_table));
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else
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fprintf(stderr, "si code=%d ", siginfo->si_code);
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if ((siginfo->si_code != SI_USER) &&
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(signum == SIGILL || signum == SIGFPE ||
|
||||
signum == SIGSEGV || signum == SIGBUS))
|
||||
fprintf(stderr, "fault addr=%p", siginfo->si_addr);
|
||||
fprintf(stderr, "\n");
|
||||
|
||||
#ifdef HAVE_BACKTRACE
|
||||
frames = backtrace(stack_syms, 32);
|
||||
backtrace_symbols_fd(stack_syms, frames, 2);
|
||||
#endif
|
||||
exit(FSCK_ERROR);
|
||||
}
|
||||
|
||||
void sigcatcher_setup(void)
|
||||
{
|
||||
struct sigaction sa;
|
||||
|
||||
sa.sa_sigaction = die_signal_handler;
|
||||
sa.sa_flags = SA_SIGINFO;
|
||||
|
||||
sigaction(SIGFPE, &sa, 0);
|
||||
sigaction(SIGILL, &sa, 0);
|
||||
sigaction(SIGBUS, &sa, 0);
|
||||
sigaction(SIGSEGV, &sa, 0);
|
||||
}
|
||||
|
||||
|
||||
#ifdef DEBUG
|
||||
#include <getopt.h>
|
||||
|
||||
void usage(void)
|
||||
{
|
||||
fprintf(stderr, "tst_sigcatcher: [-akfn]\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
struct sigaction sa;
|
||||
char *p = 0;
|
||||
int i, c;
|
||||
volatile x=0;
|
||||
|
||||
memset(&sa, 0, sizeof(struct sigaction));
|
||||
sa.sa_sigaction = die_signal_handler;
|
||||
sa.sa_flags = SA_SIGINFO;
|
||||
for (i=1; i < 31; i++)
|
||||
sigaction(i, &sa, 0);
|
||||
|
||||
while ((c = getopt (argc, argv, "afkn")) != EOF)
|
||||
switch (c) {
|
||||
case 'a':
|
||||
abort();
|
||||
break;
|
||||
case 'f':
|
||||
printf("%d\n", 42/x);
|
||||
case 'k':
|
||||
kill(getpid(), SIGTERM);
|
||||
break;
|
||||
case 'n':
|
||||
*p = 42;
|
||||
default:
|
||||
usage ();
|
||||
}
|
||||
|
||||
printf("Sleeping for 10 seconds, send kill signal to pid %u...\n",
|
||||
getpid());
|
||||
fflush(stdout);
|
||||
sleep(10);
|
||||
exit(0);
|
||||
}
|
||||
#endif
|
||||
|
|
@ -1024,6 +1024,7 @@ int main (int argc, char *argv[])
|
|||
char *cp;
|
||||
|
||||
clear_problem_context(&pctx);
|
||||
sigcatcher_setup();
|
||||
#ifdef MTRACE
|
||||
mtrace();
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue