Bug 69671 - incorrect manpage for ptrace
incorrect manpage for ptrace
Status: CLOSED CURRENTRELEASE
Product: Red Hat Linux
Classification: Retired
Component: man-pages (Show other bugs)
7.2
i686 Linux
medium Severity medium
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Assigned To: Trond Eivind Glomsrxd
Ben Levenson
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2002-07-24 07:41 EDT by Need Real Name
Modified: 2007-04-18 12:44 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2002-07-24 12:37:29 EDT
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Description Need Real Name 2002-07-24 07:41:43 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0; ZDNetIndia.com 
browser)

Description of problem:
I think this is a problem with ptrace man page on all linux distributions. The 
man page says for POKE_* , "copies a word from location data", when in fact it 
copies the data.
i.e. say I want to write 100 to a particular address using ptrace, according to 
the man page I should be using:

int val = 100;
ptrace(PTRACE_POKEDATA, pid, addr, &val);

This doesn't work, what works is
int val = 100;
ptrace(PTRACE_POKEDATA, pid, addr, val);

Please fix the manpage for ptrace.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. man ptrace
2.
3.
	

Additional info:
Comment 1 Trond Eivind Glomsrxd 2002-07-24 12:37:23 EDT
Jakub: Is the above description of ptrace correct?
Comment 2 Jakub Jelinek 2002-07-24 16:06:52 EDT
Yes, but it has been fixed in the man page a few months ago:
       PTRACE_POKETEXT, PTRACE_POKEDATA
              Copies the word data to location addr in the child's memory.  As above, the  two  requests  are  cur-
              rently equivalent.

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