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2013-01-09Add file:allocate/3 operationFilipe David Manana
This operation allows pre-allocation of space for files. It succeeds only on systems that support such operation. The POSIX standard defines the optional system call posix_fallocate() to implement this feature. However, some systems implement more specific functions to accomplish the same operation. On Linux, if the more specific function fallocate() is implemented, it is used instead of posix_fallocate(), falling back to posix_fallocate() if the fallocate() call failed (it's only supported for the ext4, ocfs2, xfs and btrfs file systems at the moment). On Mac OS X it uses the specific fcntl() operation F_PREALLOCATE, falling back to posix_fallocate() if it's available (at the moment Mac OS X doesn't provide posix_fallocate()). On any other UNIX system, it uses posix_fallocate() if it's available. Any other system not providing this system call or any function to pre-allocate space for files, this operation always fails with the ENOTSUP POSIX error.
2012-07-19kernel: Remove VxWorks from testsBjörn-Egil Dahlberg
2011-12-21prim_file_SUITE: large_file success depends on wordsizeRaimo Niskanen
Check VM wordsize to see if a driver command with data larger than 32-bit size is supposed to succeed. On wordsize 4 machines (32-bit) {error,einval} is expected since the total size passed to a driver can not exceed sizeof(ErlDrvSizeT).
2011-12-20file_SITE,prim_file_SUITE: Accept old OpenBSD pecularityRaimo Niskanen
2011-12-20prim_file_SUITE: large_write - meaner test data and check result contentRaimo Niskanen
2011-12-20prim_file_SUITE: Add large_write/1Björn Gustavsson
Test writing slightly more than 4GB as an io list with smaller binaries.
2011-12-08Remove time_t specific test in prim_file_SUITEBjörn-Egil Dahlberg
Remove time_t = Sint64 | Uint32 testcase only. The year 2040 does not exist on Sint32.
2011-12-08Change options to prim_file:*_file_info/*Björn-Egil Dahlberg
* 'utc' changed to 'universal' * 'epoch' changed to 'posix' This change conforms to other naming already in OTP, e.g. erlang:universaltime_to_localtime/1.
2011-12-08Add file_info_opt tests in prim_file_SUITEBjörn-Egil Dahlberg
2011-05-18Fix bug in make_del_dir testcasesPatrik Nyblom
2011-05-12Teach (prim_)file_SUITE about directory access on WindowsPatrik Nyblom
2011-03-11Update copyright yearsBjörn-Egil Dahlberg
2011-02-17Rename Suite Callback to Common Test HookLukas Larsson
2011-02-17Fix formatting for kernelLukas Larsson
2011-02-17Add init_per_suite and end_per_suiteLukas Larsson
2011-02-17Add ts_install_scb to suite/0Lukas Larsson
2011-02-17Update kernel tests to conform with common_test standardLukas Larsson
2010-06-04Support opening files in exclusive modeMichael Santos
Add an option that atomically tests for the existence of a file and creates it if the file does not exist, by passing the O_EXCL flag to open() on Unix and CREATE_NEW flag on Windows. Support for O_EXCL varies across platforms and filesystems. {ok, Fd} = file:open("/tmp/foo", [write,exclusive]), {error, eexist} = file:open("/tmp/foo", [write,exclusive]).
2010-05-20Add file:advise/4 - a wrapper to the POSIX syscall posix_fadviseFilipe David Manana
Useful for informing the Operating System about the access pattern for a file's data, so that it can adapt the caching strategy to maximize disk IO performance.
2010-05-20Add file:datasync/1 for syncing file contents onlyFilipe David Manana
file:datasync/1 invokes the POSIX system call "int fdatasync(int fd)". This system call is similar to "fsync" but, unlike fsync, it does not update the metadata associated with the file (like the access time for example). It's used by many DBMSs (MySQL and SQLite of example) to increase disk IO performance, as it avoids disk seeks and disk write operations compared to fsync. More details on it at: http://linux.die.net/man/2/fdatasync An example, from the MySQL source: http://bazaar.launchpad.net/~mysql/mysql-server/mysql-5.1-telco-6.1/annotate/head%3A/mysys/my_sync.c#L61 This new function just calls fsync on systems not implementing fdatasync.
2010-05-06Merge branch 'bg/file-del_dir' into devErlang/OTP
* bg/file-del_dir: Adjust test of file:del_dir("..") to accept {error,einval}
2010-05-05Adjust test of file:del_dir("..") to accept {error,einval}Björn Gustavsson
On FreeBSD, file:del_dir("..") will return {error,einval} rather than the expected {error,eexist}, and so will file:del_dir("../.."), and so on. It could be argued that we should change the implementation of file:del_dir/1 to remap the error code (as some other error codes are remapped to reduce the differences between different platforms), but the consistency gained does not seem to be worth the effort. Therefore, until we'll find a real-world use case where it is essential to have consistent error codes for file:del_dir("..") on all platforms, change the test case to accept both errors.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP