Date: Sat, 23 Apr 2005 22:13:38 GMT From: Bill Middleton <flashdict@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/80293: sysconf() does not support well-defined unistd values Message-ID: <200504232213.j3NMDcBL026587@www.freebsd.org> Resent-Message-ID: <200504232220.j3NMKHj5020634@freefall.freebsd.org>
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>Number: 80293 >Category: misc >Synopsis: sysconf() does not support well-defined unistd values >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Apr 23 22:20:17 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Bill Middleton >Release: CURRENT >Organization: >Environment: FreeBSD my.hostname.com 6.0-CURRENT FreeBSD 6.0-CURRENT #0: Wed Apr 6 02:41:00 CEST 2005 >Description: Calling sysconf() on an defined value, including _SC_GETGR_R_SIZE_MAX, is supposed to return -1 and not set errno(), if I understand the man page correctly. However, in CURRENT, errno is set to "Invalid argument", even though the value is defined in unistd.h. >How-To-Repeat: The following C snippet will print: Errno is currently Unknown error: 0 _SC_GETGR_R_SIZE_MAX is Errno is now Invalid argument Arguably, errno should not have been set? #include <unistd.h> #include <sys/errno.h> int main(int argc, char **argv) { long fbufsize; printf("Errno is currently %s\n", strerror(errno)); printf("_SC_GETGR_R_SIZE_MAX is %l\n",_SC_GETGR_R_SIZE_MAX); fbufsize = sysconf (_SC_GETGR_R_SIZE_MAX); printf("Errno is now %s\n", strerror(errno)); } >Fix: Make sysconf() support all values defined in unistd.h, or don't define them, perhaps. >Release-Note: >Audit-Trail: >Unformatted:
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