04-22-2006
But i think sysdumpdev requires root privilges and it gives information about previous dump.
Actually i get core file from customers and before i start my investigation i need to make sure that core file is complete and not truncated.
On solaris i use the following method to check core file
% elfdump -p core | tail -5
Program Header[13]:
p_vaddr: 0xffbf8000 p_flags: [ PF_X PF_W PF_R ]
p_paddr: 0 p_type: [ PT_LOAD ]
p_filesz: 0x8000 p_memsz: 0x8000
p_offset: 0x71a24 p_align: 0
% ls -la core
-rw------- 1 joeuser staff 498212 Jun 4 14:04 core
# add the <filesz> field and the <offset> field of the
# last program header segment to find the total expected
# size of the core file. See if that number matches
# the size shown by the ls command.
% dbx -c "print 0x8000 + 0x71A24 ; quit"
dbx: warning: unknown language, 'ansic' assumed
0x8000+0x71a24 = 498212
# The result matches, so this is a complete core file.
is there anything equvivalent to above method
from
khan
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gcore(1) General Commands Manual gcore(1)
NAME
gcore - get core images of running processes
SYNOPSIS
filename] process-id...
DESCRIPTION
The command creates a core image of each specified process. By default, the name of the core image file for process-id will be The process
information in the core file can be obtained by using debuggers.
When the command creates a core image of each specified process, the process is temporarily stopped. Further, when the creation of core
image is complete, the process continues to execute.
Options
Creates the core file with name of the file as
If multiple process-id values are specified, filename will be common for all the core image files. See the section.
Operands
process-id The process ID for which a core image file will be created.
RETURN VALUE
Upon completion, exits with one of the following values:
A core file was successfully created.
An error condition was encountered.
In such a case, the creation of a core file is not guaranteed. The error conditions could be because of
o A nonexistent or incorrect process ID was specified.
o An invalid option was specified.
o The current working directory of the process or directory from which was invoked had no write permissions.
o The current working directory of the process was not accessible.
o The file system is full.
EXAMPLES
Example 1
Dump the core image of process 1030 in the file "core.1030".
Example 2
Dump the core image of the process 1030 in the file "test.1030".
Example 3
Dump the core image of the processes 1030, 1031, 1032, and 1033 in the files "core.1030", "core.1031", "core.1032", "core.1033".
Example 4
Dump the core image of the processes 1030, 1031, 1032, and 1033 in the files
FILES
Core image file for process-id. (Both where is invoked and the current working directory of the process.)
AUTHOR
was developed by Chris Bertin (HP).
SEE ALSO
adb(1), gdb(1), kill(1), ttrace(2), a.out(4), core(4).
gcore(1)