Issue: unix fifo (named pipe) does not appear in share, attempts to read the pipe result in "Access Denied">From an XP laptop, I can open and access my samba share normally. I canread all files and subdirectories in the share, but a fifo I need to read does not appear at all. I have made the fifo mode 777 (world readable, writeable, executeable) and tried other things like setting " follow symlinks = yes ", "unix extensions = no" and "log level = 3", making the fifo name less than 8 char, but nothing seems to help. If I try to directly read from the share, from a MSDOS cmdline, with a "type \\server\myshare\mypipe" I get only an "Access Denied" message. I have been able to do this for years on other machines, specifically one running CentOS 5.5, smb version 3.0.33-3.29.el5_6.2 and yes, I can read from the fifo w/o any problem from the linux commandline. I have also tried to read the fifo via smbclient but get much the same result (smb: \> get mypipe NT_STATUS_ACCESS_DENIED opening remote file \mypipe) OS: CentOS 6 (64 bit) samba Version: 3.5.4-68.el6_0.2 relevant portions of smb.conf: log level = 3 unix extensions = no follow symlinks = yes security = user passdb backend = tdbsam encrypt passwords = yes [myshare] comment = my comment path = /path/to/share public = yes writable = yes browseable = yes guest ok = yes write list = charlie When I attempt to read the pipe from my laptop, the below appears in my logfile ("/var/log/samba/log.mylaptop"): [2011/07/19 16:17:23.363416, 3] smbd/process.c:1485(process_smb) Transaction 63 of length 80 (0 toread) [2011/07/19 16:17:23.363605, 3] smbd/process.c:1294(switch_message) switch message SMBtrans2 (pid 8989) conn 0x7ff3f473b110 [2011/07/19 16:17:23.363679, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (500, 500) - sec_ctx_stack_ndx = 0 [2011/07/19 16:17:23.364132, 3] smbd/trans2.c:5099(call_trans2qfilepathinfo) call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1004 [2011/07/19 16:17:23.364218, 3] smbd/vfs.c:851(check_reduced_name) check_reduced_name [.] [/path/to/share] [2011/07/19 16:17:23.364296, 3] smbd/vfs.c:1008(check_reduced_name) check_reduced_name: . reduced to /path/to/share [2011/07/19 16:17:23.364483, 3] smbd/trans2.c:5225(call_trans2qfilepathinfo) call_trans2qfilepathinfo . (fnum = -1) level=1004 call=5 total_data=0 [2011/07/19 16:17:23.367804, 3] smbd/process.c:1485(process_smb) Transaction 64 of length 80 (0 toread) [2011/07/19 16:17:23.367886, 3] smbd/process.c:1294(switch_message) switch message SMBtrans2 (pid 8989) conn 0x7ff3f473b110 [2011/07/19 16:17:23.367946, 3] smbd/trans2.c:5099(call_trans2qfilepathinfo) call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1005 [2011/07/19 16:17:23.368013, 3] smbd/vfs.c:851(check_reduced_name) check_reduced_name [.] [/path/to/share] [2011/07/19 16:17:23.368078, 3] smbd/vfs.c:1008(check_reduced_name) check_reduced_name: . reduced to /path/to/share [2011/07/19 16:17:23.368147, 3] smbd/trans2.c:5225(call_trans2qfilepathinfo) call_trans2qfilepathinfo . (fnum = -1) level=1005 call=5 total_data=0 [2011/07/19 16:17:23.371384, 3] smbd/process.c:1485(process_smb) Transaction 65 of length 100 (0 toread) [2011/07/19 16:17:23.371451, 3] smbd/process.c:1294(switch_message) switch message SMBtrans2 (pid 8989) conn 0x7ff3f473b110 [2011/07/19 16:17:23.371508, 3] smbd/trans2.c:2252(call_trans2findfirst) call_trans2findfirst: dirtype = 16, maxentries = 1366, close_after_first=1, close_if_end = 1 requires_resume_key = 1 level = 0x104, max_data_bytes = 16384 [2011/07/19 16:17:23.372288, 3] smbd/vfs.c:851(check_reduced_name) check_reduced_name [mypipe] [/path/to/share] [2011/07/19 16:17:23.372510, 1] smbd/vfs.c:932(check_reduced_name) check_reduced_name: couldn't get realpath for mypipe [2011/07/19 16:17:23.372590, 3] smbd/filename.c:1181(filename_convert) filename_convert: check_name failed for name mypipe with NT_STATUS_ACCESS_DENIED [2011/07/19 16:17:23.372644, 3] smbd/error.c:80(error_packet_set) error packet at smbd/trans2.c(2305) cmd=50 (SMBtrans2) NT_STATUS_ACCESS_DENIED [2011/07/19 16:17:25.339308, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 thx, -charlie
smb and cifs, being Windows inventions, have no concept of a unix fifo, there's simply nothing for samba to translate it to/from On Tue, Jul 19, 2011 at 4:37 PM, Charles Redditt <redcharlie at gmail.com> wrote:> Issue: unix fifo (named pipe) does not appear in share, ?attempts to read > the pipe result in "Access Denied" > > From an XP laptop, I can open and access my samba share normally. ?I can > read all files and subdirectories in the share, but a fifo I need to read > does not appear at all. ?I have made the fifo mode 777 (world readable, > writeable, executeable) and tried other things like setting " follow > symlinks = yes ", "unix extensions = no" and "log level = 3", making the > fifo name less than 8 char, ?but nothing seems to help. ?If I try to > directly read from the share, from a MSDOS cmdline, with a "type > \\server\myshare\mypipe" I get only an "Access Denied" message. > > I have been able to do this for years on other machines, specifically one > running CentOS 5.5, smb version 3.0.33-3.29.el5_6.2 > > and yes, ?I can read from the fifo w/o any problem from the linux > commandline. ?I have also tried to read the fifo via smbclient but get much > the same result (smb: \> get mypipe > NT_STATUS_ACCESS_DENIED opening remote file \mypipe) > > > OS: CentOS 6 ?(64 bit) > samba Version: 3.5.4-68.el6_0.2 > > relevant portions of smb.conf: > > ? ? log level = 3 > ? ? unix extensions = no > ? ? follow symlinks = yes > ? ? security = user > ? ? passdb backend = tdbsam > ? ? encrypt passwords = yes > > [myshare] > ? comment = my comment > ? path = /path/to/share > ? public = yes > ? writable = yes > ? browseable = yes > ? guest ok = yes > ? write list = charlie > > When I attempt to read the pipe from my laptop, the below appears in my > logfile ("/var/log/samba/log.mylaptop"): > > [2011/07/19 16:17:23.363416, ?3] smbd/process.c:1485(process_smb) > ?Transaction 63 of length 80 (0 toread) > [2011/07/19 16:17:23.363605, ?3] smbd/process.c:1294(switch_message) > ?switch message SMBtrans2 (pid 8989) conn 0x7ff3f473b110 > [2011/07/19 16:17:23.363679, ?3] smbd/sec_ctx.c:310(set_sec_ctx) > ?setting sec ctx (500, 500) - sec_ctx_stack_ndx = 0 > [2011/07/19 16:17:23.364132, ?3] > smbd/trans2.c:5099(call_trans2qfilepathinfo) > ?call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1004 > [2011/07/19 16:17:23.364218, ?3] smbd/vfs.c:851(check_reduced_name) > ?check_reduced_name [.] [/path/to/share] > [2011/07/19 16:17:23.364296, ?3] smbd/vfs.c:1008(check_reduced_name) > ?check_reduced_name: . reduced to /path/to/share > [2011/07/19 16:17:23.364483, ?3] > smbd/trans2.c:5225(call_trans2qfilepathinfo) > ?call_trans2qfilepathinfo . (fnum = -1) level=1004 call=5 total_data=0 > [2011/07/19 16:17:23.367804, ?3] smbd/process.c:1485(process_smb) > ?Transaction 64 of length 80 (0 toread) > [2011/07/19 16:17:23.367886, ?3] smbd/process.c:1294(switch_message) > ?switch message SMBtrans2 (pid 8989) conn 0x7ff3f473b110 > [2011/07/19 16:17:23.367946, ?3] > smbd/trans2.c:5099(call_trans2qfilepathinfo) > ?call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1005 > [2011/07/19 16:17:23.368013, ?3] smbd/vfs.c:851(check_reduced_name) > ?check_reduced_name [.] [/path/to/share] > [2011/07/19 16:17:23.368078, ?3] smbd/vfs.c:1008(check_reduced_name) > ?check_reduced_name: . reduced to /path/to/share > [2011/07/19 16:17:23.368147, ?3] > smbd/trans2.c:5225(call_trans2qfilepathinfo) > ?call_trans2qfilepathinfo . (fnum = -1) level=1005 call=5 total_data=0 > [2011/07/19 16:17:23.371384, ?3] smbd/process.c:1485(process_smb) > ?Transaction 65 of length 100 (0 toread) > [2011/07/19 16:17:23.371451, ?3] smbd/process.c:1294(switch_message) > ?switch message SMBtrans2 (pid 8989) conn 0x7ff3f473b110 > [2011/07/19 16:17:23.371508, ?3] smbd/trans2.c:2252(call_trans2findfirst) > ?call_trans2findfirst: dirtype = 16, maxentries = 1366, > close_after_first=1, close_if_end = 1 requires_resume_key = 1 level = 0x104, > max_data_bytes = 16384 > [2011/07/19 16:17:23.372288, ?3] smbd/vfs.c:851(check_reduced_name) > ?check_reduced_name [mypipe] [/path/to/share] > [2011/07/19 16:17:23.372510, ?1] smbd/vfs.c:932(check_reduced_name) > ?check_reduced_name: couldn't get realpath for mypipe > [2011/07/19 16:17:23.372590, ?3] smbd/filename.c:1181(filename_convert) > ?filename_convert: check_name failed for name mypipe with > NT_STATUS_ACCESS_DENIED > [2011/07/19 16:17:23.372644, ?3] smbd/error.c:80(error_packet_set) > ?error packet at smbd/trans2.c(2305) cmd=50 (SMBtrans2) > NT_STATUS_ACCESS_DENIED > [2011/07/19 16:17:25.339308, ?3] smbd/sec_ctx.c:310(set_sec_ctx) > ?setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 > > thx, > -charlie > -- > To unsubscribe from this list go to the following URL and read the > instructions: ?https://lists.samba.org/mailman/options/samba >
So, you're telling me this is a feature? Since it's been working fine on previous versions of smbd, I take it that this is a bug that's been fixed? -charlie * *FROM Chris Weiss* *cweiss at gmail.com <samba%40lists.samba.org?Subject=Re%3A%20%5BSamba%5D%20unix%20fifo%20inaccessible%20via%20samba%20share&In-Reply-To=%3CCAEhO07OWwZDC_W1Md6DckMzxULKnELfq4hYPV86szYb0PG7%3DzQ%40mail.gmail.com%3E>* **Tue Jul 19 15:40:19 MDT 2011*>smb and cifs, being Windows inventions, have no concept of a unix >fifo, there's simply nothing for samba to translate it to/fromOn Tue, Jul 19, 2011 at 4:37 PM, Charles Redditt <redcharlie at gmail.com <https://lists.samba.org/mailman/listinfo/samba>> wrote:>* Issue: unix fifo (named pipe) does not appear in share, attempts to read*>* the pipe result in "Access Denied"*>**>* From an XP laptop, I can open and access my samba share normally. I can*>* read all files and subdirectories in the share, but a fifo I need to read*>* does not appear at all. I have made the fifo mode 777 (world readable,*>* writeable, executeable) and tried other things like setting " follow*>* symlinks = yes ", "unix extensions = no" and "log level = 3", making the*>* fifo name less than 8 char, but nothing seems to help. If I try to*>* directly read from the share, from a MSDOS cmdline, with a "type*>* \\server\myshare\mypipe" I get only an "Access Denied" message.*>**>* I have been able to do this for years on other machines, specifically one*>* running CentOS 5.5, smb version 3.0.33-3.29.el5_6.2*
On Tue, Jul 19, 2011 at 04:37:58PM -0500, Charles Redditt wrote:> Issue: unix fifo (named pipe) does not appear in share, attempts to read > the pipe result in "Access Denied" > > >From an XP laptop, I can open and access my samba share normally. I can > read all files and subdirectories in the share, but a fifo I need to read > does not appear at all. I have made the fifo mode 777 (world readable, > writeable, executeable) and tried other things like setting " follow > symlinks = yes ", "unix extensions = no" and "log level = 3", making the > fifo name less than 8 char, but nothing seems to help. If I try to > directly read from the share, from a MSDOS cmdline, with a "type > \\server\myshare\mypipe" I get only an "Access Denied" message. > > I have been able to do this for years on other machines, specifically one > running CentOS 5.5, smb version 3.0.33-3.29.el5_6.2 > > and yes, I can read from the fifo w/o any problem from the linux > commandline. I have also tried to read the fifo via smbclient but get much > the same result (smb: \> get mypipe > NT_STATUS_ACCESS_DENIED opening remote file \mypipe)Yeah, this should work (it used to). Can you try with 3.5.9 (latest version) and if it doesn't log a bug please ? Thanks, Jeremy.
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