src/lib/libc/gen/exec.3, branch upstream/11.1.0

Add sbin and /usr/local directories to _PATH_DEFPATH.

2016-01-05T16:21:20+00:00

Set _PATH_DEFPATH to
/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin. This is the
path in the default class in the default /etc/login.conf,
excluding ~/bin which would not be expanded properly in a string
constant.

For normal logins, _PATH_DEFPATH is overridden by /etc/login.conf,
~/.login_conf or shell startup files. _PATH_DEFPATH is still used as a
default by execlp(), execvp(), posix_spawnp() and sh if PATH is not set, and
by cron. Especially the latter is a common trap (most recently in PR
204813).

PR:		204813
Reviewed by:	secteam (delphij), alfred

exec(3): Fix COMPATIBILITY section: default path does not contain cwd.

2015-12-12T15:57:46+00:00

MFC after:	1 week

Turn execvpe() into an internal libc routine.

2008-06-23T05:22:06+00:00

Adding exevpe() has caused some ports to break. Even though execvpe() is
a useful routine, it does not conform to any standards.

This patch is a little bit different from the patch sent to the mailing
list. I forgot to remove execvpe from the Symbol.map (which does not
seem to miscompile libc, though).

Reviewed by:	davidxu
Approved by:	philip

Add POSIX routines called posix_spawn() and posix_spawnp(), which

2008-06-17T06:26:29+00:00

can be used as replacements for exec/fork in a lot of cases. This
change also added execvpe() which allows environment variable
PATH to be used for searching executable file, it is used for
implementing posix_spawnp().

PR: standards/122051

Per Regents of the University of Calfornia letter, remove advertising

2007-01-09T00:28:16+00:00

clause.

# If I've done so improperly on a file, please let me know.

Expand *n't contractions.

2005-02-13T22:25:33+00:00

Sort sections.

2005-01-20T09:17:07+00:00

mdoc(7): Properly mark C headers.

2003-09-10T19:24:35+00:00

With the latest mdoc(7), we can now fix the synopsis like this.

2003-07-03T18:14:39+00:00

Desired by:	bde

Add a libc function execvP that takes the search path as an arguement.

2003-06-29T17:33:34+00:00

Change execvp to be a wrapper around execvP. This is necessary for some
of the /rescue pieces. It may also be more generally applicable as well.

Submitted by:	Tim Kientzle 
Approved by:	Silence on arch@