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* Fixed searching of $PATH in execvp(). Do what sh(1) should do accordingBruce Evans1997-10-141-17/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=30399
* Fixed synopsis. The envp arg for execle() can't be given in the prototype.Bruce Evans1997-09-031-2/+2
| | | | | | | Fortunately, the man page doesn't refer to "envp" so just deleting it is OK. Notes: svn path=/head/; revision=29049
* Fixed various problems: typos, grammer, missing include filesMike Pritchard1996-05-231-1/+1
| | | | | | | | wrong function type declarations, and wrong argument type declarations. Notes: svn path=/head/; revision=15874
* Added missing section numbers to a bunch of .Xr macros, orMike Pritchard1996-03-271-5/+5
| | | | | | | | converted them into .Fn macros where appropriate. Also fixed up some minor formatting problems. Notes: svn path=/head/; revision=14855
* Correct a bunch of man page cross references and generallyMike Pritchard1996-02-111-3/+2
| | | | | | | | | try and silence "manck". ncurses, rpc, and some of the gnu stuff are still a big mess, however. Notes: svn path=/head/; revision=14038
* BSD 4.4 Lite Lib SourcesRodney W. Grimes1994-05-271-0/+258
Notes: svn path=/cvs2svn/branches/unlabeled-1.1.1/; revision=1573
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