Bruce Evans 1df595f25d Fixed searching of $PATH in execvp(). Do what sh(1) should do according ... to POSIX.2. In particular: - don't retry for ETXTBSY. This matches what sh(1) does. The retry code was broken anyway. It only slept for several seconds for the first few retries. Then it retried without sleeping. - don't abort the search for errors related to the path prefix, in particular for ENAMETOOLONG, ENOTDIR, ELOOP. This fixes PR1487. sh(1) gets this wrong in the opposite direction by never aborting the search. - don't confuse EACCES for errors related to the path prefix with EACCES for errors related to the file. sh(1) gets this wrong. - don't return a stale errno when the search terminates normally without finding anything. The errno for the last unsuccessful execve() was usually returned. This gave too much precedence to pathologies in the last component of $PATH. This bug is irrelevant for sh(1). The implementation still uses the optimization/race-inhibitor of trying to execve() things first. POSIX.2 seems to require looking at file permissions using stat(). We now use stat() after execve() if execve() fails with an ambiguous error. Trying execve() first may actually be a pessimization, since failing execve()s are fundamentally a little slower than stat(), and are significantly slower when a file is found but has unsuitable permissions or points to an unsuitable interpreter. PR: 1487		1997-10-14 07:23:16 +00:00
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compat	Add libg++ 3.0	1997-04-03 06:08:28 +00:00
csu/i386	Make this file p-make clean. (Use "ld -O foo" instead of "ld; mv	1997-10-11 02:37:42 +00:00
libalias	Upgrade to 2.4 (Fix -PKT_ALIAS_UNREGISTERED_ONLY)	1997-09-06 11:11:43 +00:00
libc	Fixed searching of $PATH in execvp(). Do what sh(1) should do according	1997-10-14 07:23:16 +00:00
libc_r	Bring back nanosleep from the cold.	1997-06-04 13:03:12 +00:00
libcom_err	Revert $FreeBSD$ to $Id$	1997-02-22 15:12:41 +00:00
libcompat	kill the undead	1997-07-13 14:26:00 +00:00
libcrypt	When compiling under elf, use correct library naming conventions. Also	1997-09-05 12:12:35 +00:00
libcurses	Remove extra definition of vwprintw.	1997-08-23 23:23:07 +00:00
libdisk	Fixed this header to compile with gcc -pedantic -Werror (removed comma	1997-03-19 01:54:04 +00:00
libedit	Sort cross refereces in section SEE ALSO.	1997-09-29 19:11:55 +00:00
libf2c	Add a -I switch to CFLAGS to use the f2c.h header file in the usr.bin/f2c	1997-04-24 17:10:56 +00:00
libF77	Upgrade to the 1997/02/26 version.	1997-04-13 01:16:58 +00:00
libftpio	Teach ftpErrString to format UNIX errnos, since at least ftpLogin()	1997-10-02 23:26:03 +00:00
libgnumalloc	Revert $FreeBSD$ to $Id$	1997-02-22 15:12:41 +00:00
libI77	Upgrade to the 1997/02/26 version.	1997-04-13 01:16:58 +00:00
libipx	-I${DESTDIR}/sys -> -I${.CURDIR}/../../sys.	1997-08-26 14:13:02 +00:00
libkse	Bring back nanosleep from the cold.	1997-06-04 13:03:12 +00:00
libkvm	-I${DESTDIR}/sys -> -I${.CURDIR}/../../sys.	1997-08-26 14:13:02 +00:00
libm	This commit was generated by cvs2svn to compensate for changes in r27180,	1997-07-03 03:28:27 +00:00
libmd	If not building a.out, still build a pic version of libmd. This allows	1997-09-05 11:49:43 +00:00
libmytinfo	Fix longstanding bug with buffer pointer goes beyoud buffer start	1997-08-13 01:21:36 +00:00
libncurses	environmental -> environment.	1997-09-18 06:55:21 +00:00
libopie	Move locks from /etc/opielocks to /var/run/opielocks to keep	1997-10-01 13:02:20 +00:00
libpam/modules	Changes for KTH KerberosIV.	1997-09-28 08:57:24 +00:00
libpcap	Also install pcap-int.h so things can call pcap_compile on arbitary	1997-10-10 11:55:42 +00:00
libpthread	Bring back nanosleep from the cold.	1997-06-04 13:03:12 +00:00
libresolv	Yet another attempt to remove the old libraries correctly. libfoo.*	1996-10-08 20:06:41 +00:00
librpcsvc	Fix conflicts (this one is easy: there's just the Makefile).	1997-05-28 04:53:07 +00:00
libscsi	-I${DESTDIR}/sys -> -I${.CURDIR}/../../sys.	1997-08-26 14:13:02 +00:00
libskey	If building under elf, have libskey.so depend on libmd and libcrypt.	1997-09-05 11:52:20 +00:00
libss	Revert $FreeBSD$ to $Id$	1997-02-22 15:12:41 +00:00
libtcl	Update to tcl8.0 release version.	1997-10-01 13:37:27 +00:00
libtelnet	Revert $FreeBSD$ to $Id$	1997-02-22 15:12:41 +00:00
libtermcap	Restore back issetugid() usage and bump major number	1997-08-31 08:37:28 +00:00
libutil	Remove the claim that UUCP locking were not atomic. It is since	1997-10-07 07:24:50 +00:00
libvgl	Add rudimentary support for using the keyboard.	1997-10-01 20:53:41 +00:00
libxpg4	Add mskanji.c	1997-09-25 23:24:35 +00:00
liby	Revert $FreeBSD$ to $Id$	1997-02-22 15:12:41 +00:00
libz	This commit was generated by cvs2svn to compensate for changes in r29747,	1997-09-23 21:34:42 +00:00
msun	Hide the declaration of `struct exception' from C++, since it conflicts	1997-08-31 22:12:19 +00:00
ncurses/ncurses	Fix saving/restoring tty modes, allow initscr be called twice,	1997-08-25 07:41:15 +00:00
Makefile	Changes for KTH KerberosIV	1997-09-28 09:08:48 +00:00
Makefile.inc