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When correcting OTP-10071, a new error was introduced in
erl_prim_loader. In order to improve ability to detect if a file was
inside the primary archive, all paths were flattened - i.e. "." and
".." were removed. This implementation had some faults, and it did not
take symlinks into account. This has been corrected.
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* ta/prim_archive-reloading:
escript_SUITE: remove gratuitous space
[erts,kernel,stdlib] fix escript/primary archive reloading
Conflicts:
erts/preloaded/src/erl_prim_loader.erl
OTP-10151
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erl_prim_loader.beam
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This commit introduces no functional change. It only adds comments and
changes some function/variable names.
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The following errors have been corrected:
* If primary archive was named "xxx", then a file in the same
directory named "xxxyyy" would be interpreted as a file named yyy
inside the archive.
* erl_prim_loader did not correctly create and normalize absolute
paths for primary archive and files inside it, so unless given with
exact same path files inside the archive would not be found. E.g. if
escript was started as /full/path/to/xxx then "./xxx/file" would not
be found since erl_prim_loader would try to match /full/path/to/xxx
with /full/path/to/./xxx. Same problem with ../.
* Depending on how the primary archive was built,
erl_prim_loader:list_dir/1 would sometimes return an empty string
inside the file list. This was a virtual element representing the
top directory of the archive. This has been removed.
Thanks to Tuncer Ayaz and Shunichi Shinohara for reporting and
co-authoring corrections.
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If the mtime of an escript/primary archive file changes after being
added to the code path, correctly reload the archive and update the
cache.
The existing code didn't consider that it might be a zip archive and failed:
=ERROR REPORT==== 3-Aug-2011::09:21:21 ===
File operation error: bad_central_directory. Target:
/escript_archive/module.beam. Function: get_file. Process: code_server.
Thanks David Reid and Hakan Mattson.
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OTP-10106
OTP-10107
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User tags in a dynamic trace enabled VM are spread throughout the system
in the same way as seq_trace tokens. This is used by the file module
and various other modules to get hold of the tag from the user process
without changing the protocol.
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Add probes to (mostly) the efile_drv.c driver and other
file I/O-related source files.
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* sverk/zlib_port_leak:
Fix port leaks in zlib
OTP-9981
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* ph/fix-enfile/OTP-9990:
Update preloaded prim_inet.beam
gen_tcp: Use correct specs for accept and listen
prim_inet: Catch system_limit in open_port
Fix returned error from gen_tcp:accept/1,2 when running out of ports
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Will catch system_limit and return error tuple instead. An uncaught
exception would be an incorrect behaviour. This problem would occur
for gen_tcp:listen/1,2 for example.
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zip,unzip,gzip,gunzip,compress and uncompress did not close the port
when given invalid data argument. Fixed by putting close in "try-after".
A closed port could in same cases get stuck in limbo due to data in
io-queue. Fixed by adding a flush callback.
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OTP-9810
OTP-9812
OTP-9813
OTP-9814
OTP-9818
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* egil/file-info-opt-utc/OTP-7687: (39 commits)
Remove time_t specific test in prim_file_SUITE
Update prim_file.beam and prim_zip.beam
Add types for posixtime_to_universaltime and the reverse
Set BASEYEAR to 1902
Set lower limit of years handled to 1601
Emulate localtime, gmtime and mktime to enable negative time_t
Document file:*_file_info/2
Fix compiler warning in unix_efile.c
Change name of bif universaltime_to_seconds/1
Change options to prim_file:*_file_info/*
Remove dead code
Catch errors from prim_file:*_file_info
Testcase for utc <-> seconds conversion
Fix negative time in seconds_to_universaltime/1
Remove OS taint from datetime conversion
Add utc <-> seconds conversions bifs
Let prim_file validate ctime in file_info
Teach #file_info spec unix epochs for file times
Add file_info_opt tests in prim_file_SUITE
unix_efile: Zero is a valid number in utime
...
Conflicts:
erts/emulator/beam/erl_time_sup.c
erts/emulator/sys/win32/erl_win_sys.h
erts/emulator/sys/win32/sys_time.c
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* erlang:universaltime_to_seconds/1 changed to
erlang:universaltime_to_posixtime/1
* erlang:seconds_to_universaltime/1 changed to
erlang:posixtime_to_universaltime/1
Let prim_file.erl reflect these changes.
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* 'utc' changed to 'universal'
* 'epoch' changed to 'posix'
This change conforms to other naming already in OTP, e.g.
erlang:universaltime_to_localtime/1.
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We do not want to crash the file server.
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Bad practice
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First stage in utc-time for prim_file.
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* ta/sendfile/OTP-9240: (31 commits)
Add sendfile server printouts
Skip recv/send during tests for fallback platforms
Remove header/trailer support
Remove windows implementation
Expand sendfile documentation
Only allow tcp sockets as target for sendfile
Move sendfile api to file module
Preliminary work on header/trailer
Use free_sendfile explicitly for non-async
Remove debug printouts
Add tests for send/recv/sendfile interactions
Remove tests for file_server sendfile
sendfile caller now has to be the controlling_process
Remove support for file_server, sendfile has to be raw
Set chunk size to 3 GB
Change type of fd to be ErlDrvEvent
Add ifdef's for HAVE_SENDFILE
Fix freebsd support for sendfile
Change nbytes to 64 bit
Implement ignorefd for TCP
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Since the API for headers/trailers seem to be very awkward to
work with when using non-blocking io the feature is dropped
for now. See unix_efile.c for more details.
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Have to figure out how to represent progress in header writing when
using non-blocking, not sure how to do this.
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Ignore fd is a feature used by sendfile to temporarily remove
all driver_select calls on that fd so that another driver can
select on it. It also delays all actions which sends or receives
data in that fd until in the fd is no longer ignored.
Only the controlling_process should use the feature as it is otherwise
possible that the ignore will never be cleaned up and hence create
a memory leak in the driver.
An ignored driver will not detect that an fd has been closed until
it is unignored.
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Move sendfile data to invoke data instead of file_descr.
Remove usage of ready_output when doing a send.
If told to send 0 bytes, file_sendfile now sends the entire file
for linux.
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Move the command handling to outputv in preparation for
header and trailer inclusion in the sendfile api.
Use the standard efile communication functions for sendfile.
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Created erlang fallback for sendfile in gen_tcp and
moved sendfile from file to gen_tcp. Also created testcases
for testing all different options to sendfile.
For info about how sendfile should work see the BSD man pages
as they contain a more complete API than other *nixes.
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aa_mem_data/2 is only called by aa_mem_data/1 and itself.
aa_mem_data/1 called with the argument 'notsup' will never
call aa_mem_data/2. aa_mem_data/2 will only call itself with
a #memory{} record as the first argument. QED.
Noticed-by: Dialyzer.
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Allow Erlang code to use sendfile() where available by wrapping it as
file:sendfile/4 and file:sendfile/2.
sendfile(2) - Linux man page:
"sendfile() copies data between one file descriptor and another.
Because this copying is done within the kernel, sendfile() is more
efficient than the combination of read(2) and write(2), which would
require transferring data to and from user space."
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It is better that gen_sctp:open/0-2 returns the informative Posix
return code {error,eprotonosupport} than previously {error,badarg}
when SCTP is not supported since it is so platform dependent.
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