Commit Graph

46 Commits

Author SHA1 Message Date
alc
524cb00f17 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
uqs
1ab3783e1a 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
37abb66e2f 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
pjd
fb7ddfc9fe - 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
kib
2d990eae05 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
kib
2e4b86adc7 Man pages for the openat(2), fexecve(2) and related syscalls.
Reviewed by:	ru
2008-04-16 13:03:12 +00:00
imp
cd1f140ae4 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
ru
6651f20e0d Sort SEE ALSO references (in dictionary order, ignoring case). 2004-07-04 20:55:50 +00:00
ru
57ce50860e Eliminate double whitespace. 2004-07-03 22:30:10 +00:00
ru
01548ace15 Mechanically kill hard sentence breaks. 2004-07-02 23:52:20 +00:00
ru
51fe7c1a88 mdoc(7) police: "The .Fa argument.". 2002-12-19 09:40:28 +00:00
ru
863465c1ab mdoc(7) police: Fixed abuses of the .Ar and .Em macros. 2002-12-18 13:33:04 +00:00
ru
a4b155d7a2 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
wollman
227736bae6 Document file descriptor reopening and current standardization status. 2002-08-07 18:03:30 +00:00
keramida
5bd8884c66 The .Fn function. 2002-07-15 20:59:12 +00:00
ru
669f011103 mdoc(7) police: markup the previous delta. 2001-12-04 16:09:27 +00:00
jwd
2a6f1a68f9 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
ru
5cf7b5f41f 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
ru
623da62a5a mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
dd
a145482cf6 Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00
ru
317b7d8e37 mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 13:41:46 +00:00
dd
eaa6ee03b8 mdoc(7) police: remove extraneous .Pp before and/or after .Sh. 2001-07-09 09:54:33 +00:00
ru
05e503d80a mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2). 2001-07-06 16:46:48 +00:00
ru
5addfd60d6 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
ru
8a6f8b5fe4 mdoc(7) police: split punctuation characters + misc fixes. 2001-02-01 16:38:02 +00:00
sobomax
a7b1ee02c0 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
ru
a6f5d950d8 Avoid use of direct troff requests in mdoc(7) manual pages. 2000-11-10 17:46:15 +00:00
ben
5260de5ec7 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
phantom
cb5fd90ad4 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
phantom
5401879e3b Introduce ".Lb" macro to libc manpages.
More libraries manpages updates following.
2000-04-21 09:42:15 +00:00
sheldonh
329223e6f2 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
76f0c923fe $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
mpp
b813f67e2a 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
10cf770b18 Change reference to mount(1) to mount(8) 1999-08-14 06:17:24 +00:00
hoek
25446ce2c8 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
alex
8488139b2f Document that arg max is controllable via sysctl. 1998-01-11 21:43:38 +00:00
adam
bebb78e244 execve of interpreter files
reword for grammar/clarity
1997-07-08 18:27:38 +00:00
mpp
2602ef2be2 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
724b89cfd3 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
mpp
36f0550d96 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
mpp
ccc340f5aa Update a bunch of man pages to use .Fn instead
of .Nm when referencing funciton names.
1996-08-22 22:05:59 +00:00
mpp
950ac9c810 NCARGS is defined as 65536 in the released system, not 20480. 1996-08-15 21:04:29 +00:00
mpp
ba6f97d58c 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
mpp
3aeb7f1d49 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
619b731f5b Reviewed by: julian and (hsu?)
Submitted by:	 John Birrel(L?)

changes for threadsafe operations
1996-01-22 00:02:33 +00:00
rgrimes
be22b15ae2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00