Date: Mon, 04 Jan 2016 12:28:25 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 205871] install(1) in endless loop for orphaned symlinks Message-ID: <bug-205871-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205871 Bug ID: 205871 Summary: install(1) in endless loop for orphaned symlinks Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: frank@pinky.sax.de install(1) with option "-d" creates directories. If the final target or an intermediate directory is a symbolic link, that points to a none existing file/directory, then install will enter an endless loop. I believe the behaviour was introduced with base r272026 | mjg | 2014-09-23 13:41:09 +0200 (Tue, 23 Sep 2014). It was observed when using mergemaster for a jail setup with ezjail. In that case symlinks visited from host can point to not existing directories on host system. environment: FreeBSD 11.0-CURRENT #10 r292982M: how to repeat: % ln -s /notexists /tmp/ % install -d /tmp/notexists & [1] 9843 % ps -v -p 9843 PID STAT TIME SL RE PAGEIN VSZ RSS LIM TSIZ %CPU %MEM COMMAND 9843 R 1:12.80 127 73 0 8356 2024 - 28 100.0 0.0 install -d /tmp/notexists % kill -ABRT 9843 % gdb /usr/bin/install install.core (gdb) bt #0 stat () at stat.S:3 #1 0x0000000000402e0b in main (argc=<value optimized out>, argv=<value optimized out>) at /usr/src11/usr.bin/xinstall/xinstall.c:1269 (gdb) list 1269 1264 for (p = path;; ++p) 1265 if (!*p || (p != path && *p == '/')) { 1266 ch = *p; 1267 *p = '\0'; 1268 again: 1269 if (stat(path, &sb) < 0) { 1270 if (errno != ENOENT) 1271 err(EX_OSERR, "stat %s", path); 1272 if (mkdir(path, 0755) < 0) { 1273 if (errno == EEXIST) (gdb) q The stat call returns ENOENT and mkdir returns with EEXIST - that creates an endless loop. -- You are receiving this mail because: You are the assignee for the bug.
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