Date: Mon, 03 Sep 2012 21:46:17 -0400 From: Sam Varshavchik <mrsam@courier-mta.com> To: freebsd-hackers@freebsd.org Subject: What happened to my /proc/curproc/file? Message-ID: <cone.1346723177.448775.23058.1000@monster.email-scan.com>
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Am I the only one who's seeing this weirdness with procfs on 9.0-RELEASE-p3.
Unless I'm overlooking something stupid, a process that rmdir(2)s a
subdirectory of its current directory ends up with a broken
/proc/curproc/file symlink:
[mrsam@freebsd ~/stasher/stasher]$ cat t.c
#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>
void dump(int n)
{
char buf[2048];
printf("Line %d, rc=%s\n", n,
(readlink("/proc/curproc/file", buf, 2048) < 0 ? "err":"ok"));
}
int main(int argc, char **argv)
{
dump(__LINE__);
mkdir("conftestdir.tst", 0777);
rmdir("conftestdir.tst");
dump(__LINE__);
}
[mrsam@freebsd ~/stasher/stasher]$ cc -o t t.c
[mrsam@freebsd ~/stasher/stasher]$ ./t
Line 15, rc=ok
Line 18, rc=err
???????
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