Commit Graph

46 Commits

Author SHA1 Message Date
Alan Cox
8f7f5a7f26 Fix exec_imgact_shell()'s handling of two error cases: (1) Previously, if
the first line of a script exceeded MAXSHELLCMDLEN characters, then
exec_imgact_shell() silently truncated the line and passed on the truncated
interpreter name or argument.  Now, exec_imgact_shell() will fail and return
ENOEXEC, which is the commonly used errno among Unix variants for this type
of error. (2) Previously, exec_imgact_shell()'s check on the length of the
interpreter's name was ineffective.  In other words, exec_imgact_shell()
could not possibly fail and return ENAMETOOLONG.  The reason being that the
length of the interpreter name had to exceed MAXSHELLCMDLEN characters in
order that ENAMETOOLONG be returned.  But, the search for the end of the
interpreter name stops after at most MAXSHELLCMDLEN - 2 characters are
scanned.  (In the end, this particular error is eventually discovered
outside of exec_imgact_shell() and ENAMETOOLONG is returned.  So, the real
effect of this second change is that the error is detected earlier, in
exec_imgact_shell().)

Update the definition of MAXINTERP to the actual limit on the size of
the interpreter name that has been in effect since r142453 (from
2005).

In collaboration with: kib
2010-09-21 16:24:51 +00:00
Ulrich Spörlein
0afc94c17a mdoc: move CAVEATS, BUGS and SECURITY CONSIDERATIONS sections to the
bottom of the manpages and order them consistently.

GNU groff doesn't care about the ordering, and doesn't even mention
CAVEATS and SECURITY CONSIDERATIONS as common sections and where to put
them.

Found by:	mdocml lint run
Reviewed by:	ru
2010-05-13 12:07:55 +00:00
Jilles Tjoelker
c84cab5626 Update xrefs from 4.3BSD to modern signal functions in various man pages.
sigvec(2) references have been updated to sigaction(2), sigsetmask(2) and
sigblock(2) to sigprocmask(2), sigpause(2) to sigsuspend(2).

Some legacy man pages still refer to them, that is OK.
2010-05-06 22:49:54 +00:00
Pawel Jakub Dawidek
69a789b985 - Don't suggest opening file for writing in preparation for fexecve(2).
- execve(2)/fexecve(2) won't return ETXTBSY if file is open for reading.

Approved by:	re (kib)
2009-07-05 20:20:09 +00:00
Konstantin Belousov
eaad109973 When calculating arguments to the interpreter for the shebang script
executed by fexecve(2), imgp->args->fname is NULL. Moreover, there is
no way to recover the path to the script being executed.
Do what some other U*ixes do unconditionally, namely supply /dev/fd/n
as the script path when called from fexecve(). Document requirement of
having fdescfs mounted as caveat.
2008-08-26 10:53:32 +00:00
Konstantin Belousov
a141af6930 Man pages for the openat(2), fexecve(2) and related syscalls.
Reviewed by:	ru
2008-04-16 13:03:12 +00:00
Warner Losh
c879ae3536 Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.
2007-01-09 00:28:16 +00:00
Ruslan Ermilov
1c85060a13 Sort SEE ALSO references (in dictionary order, ignoring case). 2004-07-04 20:55:50 +00:00
Ruslan Ermilov
30950a21e1 Eliminate double whitespace. 2004-07-03 22:30:10 +00:00
Ruslan Ermilov
1a0a934547 Mechanically kill hard sentence breaks. 2004-07-02 23:52:20 +00:00
Ruslan Ermilov
2efeeba554 mdoc(7) police: "The .Fa argument.". 2002-12-19 09:40:28 +00:00
Ruslan Ermilov
5c564bae0a mdoc(7) police: Fixed abuses of the .Ar and .Em macros. 2002-12-18 13:33:04 +00:00
Ruslan Ermilov
2faeeff4c9 mdoc(7) police: Tidy up the syscall language.
Stop calling system calls "function calls".

Use "The .Fn system call" a-la "The .Nm utility".

When referring to a non-BSD implementation in
the HISTORY section, call syscall a function,
to be safe.
2002-12-18 09:22:32 +00:00
Garrett Wollman
4879739808 Document file descriptor reopening and current standardization status. 2002-08-07 18:03:30 +00:00
Giorgos Keramidas
1f2cec106f The .Fn function. 2002-07-15 20:59:12 +00:00
Ruslan Ermilov
dd98d57b45 mdoc(7) police: markup the previous delta. 2001-12-04 16:09:27 +00:00
John W. De Boskey
a5f75648d8 Return a more meaningful errno when the length of the interpreter
exceeds MAXSHELLCMDLEN to avoid secondary /bin/sh execution.

Update execve man page to reflect change.

Increase MAXSHELLCMDLEN to a slightly more meaningful value.

PR:		kern/32106
Submitted by:	b@etek.chalmers.se
Reviewed by:	bsd
MFC after:	2 weeks
2001-11-28 03:26:58 +00:00
Ruslan Ermilov
db8caf03e5 Remove the internal implementation details of wrapping syscalls,
which do not match the reality anyway.

Approved by:	deischen, bde
2001-10-26 17:38:20 +00:00
Ruslan Ermilov
32eef9aeb1 mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
Dima Dorfman
7ebcc426ef Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00
Ruslan Ermilov
a307d59838 mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 13:41:46 +00:00
Dima Dorfman
70d51341bf mdoc(7) police: remove extraneous .Pp before and/or after .Sh. 2001-07-09 09:54:33 +00:00
Ruslan Ermilov
5521ff5a4d mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2). 2001-07-06 16:46:48 +00:00
Ruslan Ermilov
46eea498da mdoc(7) police: Change -filled displays (which just happen
to be the same as -ragged in the current implementation) to
-ragged.  With mdocNG, -filled displays produce the correct
output, formatted and justified to both margins.
2001-02-07 13:45:30 +00:00
Ruslan Ermilov
d0353b836e mdoc(7) police: split punctuation characters + misc fixes. 2001-02-01 16:38:02 +00:00
Maxim Sobolev
1447779521 Add reference to elf(5) in addition to already mentioned a.out(5) and add both
elf(5) and a.out(5) into `SEE ALSO' section.
2000-11-27 15:18:25 +00:00
Ruslan Ermilov
726b61ab5f Avoid use of direct troff requests in mdoc(7) manual pages. 2000-11-10 17:46:15 +00:00
Ben Smithurst
d9b1c37c3b Fix description of argv[0] passed to interpreted scripts; it's the name of
the interpreter, _not_ the argv[0] passed in the original exec() call.
2000-08-05 16:38:24 +00:00
Alexey Zelkin
4f79a4117a Use `Er' variable to define first column width in ERRORS section. It was
initially suggested by mdoc(7) style, but was broken over the years
2000-05-04 13:09:25 +00:00
Alexey Zelkin
25bb73e063 Introduce ".Lb" macro to libc manpages.
More libraries manpages updates following.
2000-04-21 09:42:15 +00:00
Sheldon Hearn
c6ff3a1bf7 Remove single-space hard sentence breaks. These degrade the quality
of the typeset output, tend to make diffs harder to read and provide
bad examples for new-comers to mdoc.
2000-03-02 09:14:21 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Mike Pritchard
74804d58a0 Various man page cleanup:
- Sort xrefs
- FreeBSD.ORG -> FreeBSD.org
- Be consistent with section names as outlines in mdoc(7)
- Other misc mdoc cleanup.

PR:		doc/13144
Submitted by:	Alexy M. Zelkin <phantom@cris.net>
1999-08-15 09:51:25 +00:00
Chris Costello
e5721f2fd3 Change reference to mount(1) to mount(8) 1999-08-14 06:17:24 +00:00
Tim Vanderhoek
e21de373a2 Mention that set-id bits are not honoured for shell scripts and
filesystems with the "nosuid" option.  Mention that syscall tracing
is disabled sometimes.

PR:		misc/11328
1999-04-27 03:56:10 +00:00
Alexander Langer
6eba99b0db Document that arg max is controllable via sysctl. 1998-01-11 21:43:38 +00:00
Adam David
ccb277de1a execve of interpreter files
reword for grammar/clarity
1997-07-08 18:27:38 +00:00
Mike Pritchard
ed1fa5e0fd Cleanup some of the Lite2 merge. Most of it is mdoc cleanup,
but in one case the Lite2 changes were flat out wrong and
caused the man page to disagree with a header file.

There are still some *roff macro calls that were added that
I have yet to figure out what to do with in some of the man pages.
1997-03-12 14:49:41 +00:00
Peter Wemm
5faf00b5da Merge from Lite2 onto mainline -
- add undelete() and undelete.2 (requires libc minor bump some time)
  - man page updates
1997-03-11 11:35:56 +00:00
Mike Pritchard
8b3cccfc04 Remove the EINVAL error from the ERRORS sections that
say is means that a pathname had the high-order bit
set, since this is no longer an error.
1997-01-11 23:56:32 +00:00
Mike Pritchard
bf5a138ec4 Update a bunch of man pages to use .Fn instead
of .Nm when referencing funciton names.
1996-08-22 22:05:59 +00:00
Mike Pritchard
05bdf2ff0b NCARGS is defined as 65536 in the released system, not 20480. 1996-08-15 21:04:29 +00:00
Mike Pritchard
712dc76e87 Fixed various problems: typos, grammer, missing include files
wrong function type declarations, and wrong argument type
declarations.
1996-05-23 01:05:25 +00:00
Mike Pritchard
78b0b234eb Correct a bunch of man page cross references and generally
try and silence "manck".

ncurses, rpc, and some of the gnu stuff are still a big mess, however.
1996-02-11 22:38:05 +00:00
Julian Elischer
f70177e76e Reviewed by: julian and (hsu?)
Submitted by:	 John Birrel(L?)

changes for threadsafe operations
1996-01-22 00:02:33 +00:00
Rodney W. Grimes
58f0484fa2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00