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Description of problem: autofs is unable to mount amd map entries that have macro definitions within map entry selectors. Version-Release number of selected component (if applicable): All revisions that support amd format maps. How reproducible: Always. Steps to Reproduce: 1. Setup an NFS server with at least one export. This example assumes a host names shadow.themaw.net. 2. Add "/amd/local file,amd:/etc/amd.exports" to /etc/auto.master. 3. Create file /etc/amd.exports as: /defaults type:=auto;opts:=rw,hard,nosuid,intr,retrans=12,timeo=70 # exports fs:=${map};pref:=${key}/ exports/* hostd==${/key}.themaw.net;type:=link;fs:=/ \ hostd!=${/key}.themaw.net;type:=host;rhost:=${/key}.themaw.net;opts:=rw,hard,intr,nosuid,retrans=9,timeo=45;fs:=${autodir}/houston/${key} 4. Start autofs and try "ls /amd/local/exports/shadow". Actual results: An ENOENT error is returned. Expected results: The list of exports from the host is listed. Additional info: There are two problems, one the "." following a macro definition is not permitted by the parser, second the macro ${/key} is not expanded before use leading to an attempt to use an invalid host name which prevents getting the list of exports from the host.
Created attachment 1541672 [details] Patch - workaround getaddrinfo(3) ai_canonname bug
Created attachment 1541673 [details] Patch - improve hostname lookup error logging
Created attachment 1541674 [details] Patch - allow period following macro in selector value
Created attachment 1541675 [details] Patch - fix macro expansion in selector values
Verified based on below test result: ########################################### # on autofs-5.0.7-105.el7 # ########################################### :: [ 23:14:44 ] :: [ LOG ] :: rlServiceStart: Service autofs started successfully [23:14:44 root@ ~~]# test_mount_lookup "${auto_dir}" "${export_dir}" "use_lofs" found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs for path /test/redhat/ibm-x3550m3-06/local/lfs0 found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/util/a2ps/x86_64-rhel3 for path /test/redhat/x86_64-rhel3/util/a2ps found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/x86_64-rhel3/chap/advance found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/i386-linux/chap/advance found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/ddm++/i386-linux for path /test/redhat/i386-linux/chap/ddm++ found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/util/a2ps/x86_64-rhel3 for path /test/redhat/util/a2ps found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/chap/advance found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs for path /test/redhat/net/hp-dl180g6-01.rhts.eng.bos.redhat.com/autofs found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/util/a2ps/x86_64-rhel3 for path /test/redhat/host/util/a2ps found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/host/chap/advance found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/util/a2ps/x86_64-rhel3 for path /test/redhat/hp-dl180g6-01/util/a2ps found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/hp-dl180g6-01/chap/advancels: cannot access /test/redhat/exports/hp-dl180g6-01/raven: No such file or directory Failed to mount /test/redhat/exports/hp-dl180g6-01/raven not found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/raven for path /test/redhat/exports/hp-dl180g6-01/raven :: [ 23:16:04 ] :: [ FAIL ] :: Running 'test_mount_lookup "${auto_dir}" "${export_dir}" "use_lofs"' (Expected 0, got 1) ################################################ # on fixed version autofs-5.0.7-106.el7 # ################################################ :: [ 23:05:27 ] :: [ LOG ] :: rlServiceStart: Service autofs started successfully [23:05:27 root@ ~~]# test_mount_lookup "${auto_dir}" "${export_dir}" "use_lofs" found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs for path /test/redhat/ibm-x3550m3-06/local/lfs0 found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/util/a2ps/x86_64-rhel3 for path /test/redhat/x86_64-rhel3/util/a2ps found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/x86_64-rhel3/chap/advance found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/i386-linux/chap/advance found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/ddm++/i386-linux for path /test/redhat/i386-linux/chap/ddm++ found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/util/a2ps/x86_64-rhel3 for path /test/redhat/util/a2ps found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/chap/advance found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs for path /test/redhat/net/hp-dl180g6-01.rhts.eng.bos.redhat.com/autofs found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/util/a2ps/x86_64-rhel3 for path /test/redhat/host/util/a2ps found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/host/chap/advance found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/util/a2ps/x86_64-rhel3 for path /test/redhat/hp-dl180g6-01/util/a2ps found: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/autofs/chap/advance/i386-linux for path /test/redhat/hp-dl180g6-01/chap/advancefound: mount hp-dl180g6-01.rhts.eng.bos.redhat.com:/raven for path /test/redhat/exports/hp-dl180g6-01/raven :: [ 23:06:57 ] :: [ PASS ] :: Running 'test_mount_lookup "${auto_dir}" "${export_dir}" "use_lofs"' (Expected 0, got 0)
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2019:2250
Hi Bob,