src/posix.c


Log

Author Commit Date CI Message
Peter Pettersson e96fc028 2021-08-08T13:22:53 tests: optional test for p_open() with empty path segments
Dhruva Krishnamurthy 4ce8e01a 2020-06-17T14:31:11 Support build with NO_MMAP to disable use of system mmap * Use pread/pwrite to avoid updating position in file descriptor * Emulate missing pread/pwrite on win32 using overlapped file IO
Dhruva Krishnamurthy a9f57a89 2020-11-23T10:14:00 Remove broken support for write in emulated mmap * Emulated mmap based write without pagefault handling is not possible since IO happens outside of call to mmap and data is written to mapped memory * Potential emulation using userfaultfd() might be possible
Edward Thomson 9cd6481e 2020-04-05T19:14:35 posix: use GIT_ASSERT
Edward Thomson 8be12026 2019-06-23T17:09:22 mmap: use a 64-bit signed type `off64_t` for mmap Prefer `off64_t` to `git_off_t` for internal visibility.
Patrick Steinhardt 8c7d9761 2019-08-08T10:45:12 posix: fix direct use of `malloc` In "posix.c" there are multiple callsites which execute `malloc` instead of `git__malloc`. Thus, users of library are not able to track these allocations with a custom allocator. Convert these call sites to use `git__malloc` instead.
Patrick Steinhardt 2d85c7e8 2019-06-14T14:12:19 posix: remove `p_fallocate` abstraction By now, we have repeatedly failed to provide a nice cross-platform implementation of `p_fallocate`. Recent tries to do that escalated quite fast to a set of different CMake checks, implementations, fallbacks, etc., which started to look real awkward to maintain. In fact, `p_fallocate` had only been introduced in commit 4e3949b73 (tests: test that largefiles can be read through the tree API, 2019-01-30) to support a test with large files, but given the maintenance costs it just seems not to be worht it. As we have removed the sole user of `p_fallocate` in the previous commit, let's drop it altogether.
Jacques Germishuys d668820d 2019-05-24T10:48:47 NetBSD < 7 doesn't have posix_fallocate See: https://www.netbsd.org/changes/changes-7.0.html
Edward Thomson bd132046 2019-02-22T20:10:52 p_fallocate: compatibility fixes for macOS On macOS, fcntl(..., F_PREALLOCATE, ...) will only succeed when followed by an ftruncate(), even when it reports success. However, that syscall will fail when the file already exists. Thus, we must ignore the error code and simply let ftruncate extend the size of the file itself (albeit slowly). By calling ftruncate, we also need to prevent against file shrinkage, for compatibility with posix_ftruncate, which will only extend files, never shrink them.
Edward Thomson 7ab7bf46 2019-02-22T11:32:01 p_fallocate: don't duplicate definitions for win32
Etienne Samson 4e3949b7 2019-01-30T02:14:11 tests: test that largefiles can be read through the tree API
Edward Thomson f673e232 2018-12-27T13:47:34 git_error: use new names in internal APIs and usage Move to the `git_error` name in the internal API for error-related functions.
Patrick Steinhardt 0c7f49dd 2017-06-30T13:39:01 Make sure to always include "common.h" first Next to including several files, our "common.h" header also declares various macros which are then used throughout the project. As such, we have to make sure to always include this file first in all implementation files. Otherwise, we might encounter problems or even silent behavioural differences due to macros or defines not being defined as they should be. So in fact, our header and implementation files should make sure to always include "common.h" first. This commit does so by establishing a common include pattern. Header files inside of "src" will now always include "common.h" as its first other file, separated by a newline from all the other includes to make it stand out as special. There are two cases for the implementation files. If they do have a matching header file, they will always include this one first, leading to "common.h" being transitively included as first file. If they do not have a matching header file, they instead include "common.h" as first file themselves. This fixes the outlined problems and will become our standard practice for header and source files inside of the "src/" from now on.
Ian Douglas Scott ef09eae1 2017-06-23T10:10:29 Convert port with htons() in p_getaddrinfo() `sin_port` should be in network byte order.
Edward Thomson e6ed0d2f 2016-12-13T11:31:38 odb_loose: fsync tests Introduce a simple counter that `p_fsync` implements. This is useful for ensuring that `p_fsync` is called when we expect it to be, for example when we have enabled an odb backend to perform `fsync`s when writing objects.
Edward Thomson 909d5494 2016-12-29T12:25:15 giterr_set: consistent error messages Error messages should be sentence fragments, and therefore: 1. Should not begin with a capital letter, 2. Should not conclude with punctuation, and 3. Should not end a sentence and begin a new one
Carlos Martín Nieto 87c18197 2016-03-16T19:05:11 Split the page size from the mmap alignment While often similar, these are not the same on Windows. We want to use the page size on Windows for the pools, but for mmap we need to use the allocation granularity as the alignment. On the other platforms these values remain the same.
Sebastian Bauer 9f9df4b6 2015-12-31T11:13:21 Copy into the correct destination.
Sebastian Bauer ea5942b4 2015-12-31T11:12:57 Bail out early when no memory is available.
Edward Thomson 8d534b47 2015-02-11T13:01:00 p_read: ensure requested len is ssize_t Ensure that the given length to `p_read` is of ssize_t and ensure that callers test the return as if it were an `ssize_t`.
Carlos Martín Nieto 177a29d8 2014-10-27T10:39:45 Merge commit 'refs/pull/2366/head' of github.com:libgit2/libgit2
Linquize c6ba8a37 2014-08-02T21:57:56 Can read large file larger than 2GB on Windows
Albert Meltzer 62e562f9 2014-05-18T07:54:41 Fix compiler warning (git_off_t cast to size_t). Use size_t for page size, instead of long. Check result of sysconf. Use size_t for page offset so no cast to size_t (second arg to p_mmap). Use mod instead div/mult pair, so no cast to size_t is necessary.
Carlos Martín Nieto f7310540 2014-05-13T02:41:48 indexer: use mmap for writing Some OSs cannot keep their ideas about file content straight when mixing standard IO with file mapping. As we use mmap for reading from the packfile, let's make writing to the pack file use mmap.
Vicent Marti 6a1ca96e 2014-05-02T17:14:04 Temporary fix for Travis CI builds See https://github.com/libgit2/libgit2/pull/2321#issuecomment-42039673 We may rollback once we found something more reliable
brian m. carlson 0197d410 2014-02-15T23:09:01 Check for EWOULDBLOCK as well as EAGAIN on write. On some systems, notably HP PA-RISC systems running Linux or HP-UX, EWOULDBLOCK and EAGAIN are not the same value. POSIX (and these OSes) allow EWOULDBLOCK to occur on write(2) (and send(2), etc.), so check explicitly for this case as well as EAGAIN by defining and using a macro GIT_ISBLOCKED that considers both. The macro is necessary because MSYS does not provide EWOULDBLOCK and compilation fails if an attempt is made to use it unconditionally. On most systems, where the two values are the same, the compiler will simply optimize this check out and it will have no effect.
Russell Belfer 7697e541 2013-12-11T15:02:20 Test cancel from indexer progress callback This adds tests that try canceling an indexer operation from within the progress callback. After writing the tests, I wanted to run this under valgrind and had a number of errors in that situation because mmap wasn't working. I added a CMake option to force emulation of mmap and consolidated the Amiga-specific code into that new place (so we don't actually need separate Amiga code now, just have to turn on -DNO_MMAP). Additionally, I made the indexer code propagate error codes more reliably than it used to.
Russell Belfer 3d3ea4dc 2013-06-22T20:58:32 Add O_CLOEXEC to open calls
Russell Belfer 71d62d39 2013-02-15T16:01:31 Fix memory leak in p_getaddrinfo on Amiga If gethostbyname() fails on platforms with NO_ADDRINFO, the code leaks the struct addrinfo that was allocated. This fixes that (and a number of code formatting issues in that area of code in src/posix.c).
Edward Thomson 359fc2d2 2013-01-08T17:07:25 update copyrights
Eduardo Bart 345eef23 2012-11-07T16:10:57 Move inet_pton to posix platform-compatibility layer
Vicent Marti 798e4d53 2012-06-22T21:25:17 amigaos: Cleanup
Russell Belfer 19579847 2012-05-08T13:23:00 Clean up warnings and tests
nulltoken 3191ae89 2012-05-06T13:04:12 compat: make p_open able to accept optional mode when passing the O_CREAT flag This has the nice side effect of making test_attr_repo__staging_properly_normalizes_line_endings_according_to_gitattributes_directives() test pass again on Windows. This test started to fail after commit 674a198 was applied.
Russell Belfer 44ef8b1b 2012-04-13T13:00:10 Fix warnings on 64-bit windows builds This fixes all the warnings on win64 except those in deps, which come from the regex code.
Russell Belfer deafee7b 2012-03-14T17:36:15 Continue error conversion This converts blob.c, fileops.c, and all of the win32 files. Also, various minor cleanups throughout the code. Plus, in testing the win32 build, I cleaned up a bunch (although not all) of the warnings with the 64-bit build.
Vicent Martí dda708e7 2012-03-09T19:55:50 error-handling: On-disk config file backend Includes: - Proper error reporting when encountering syntax errors in a config file (file, line number, column). - Rewritten `config_write`, now with 99% less goto-spaghetti - Error state in `git_filebuf`: filebuf write functions no longer need to be checked for error returns. If any of the writes performed on a buffer fail, the last call to `git_filebuf_commit` or `git_filebuf_hash` will fail accordingly and set the appropiate error message. Baller!
schu 5e0de328 2012-02-13T17:10:24 Update Copyright header Signed-off-by: schu <schu-github@schulog.org>
Russell Belfer 97769280 2011-11-30T11:27:15 Use git_buf for path storage instead of stack-based buffers This converts virtually all of the places that allocate GIT_PATH_MAX buffers on the stack for manipulating paths to use git_buf objects instead. The patch is pretty careful not to touch the public API for libgit2, so there are a few places that still use GIT_PATH_MAX. This extends and changes some details of the git_buf implementation to add a couple of extra functions and to make error handling easier. This includes serious alterations to all the path.c functions, and several of the fileops.c ones, too. Also, there are a number of new functions that parallel existing ones except that use a git_buf instead of a stack-based buffer (such as git_config_find_global_r that exists alongsize git_config_find_global). This also modifies the win32 version of p_realpath to allocate whatever buffer size is needed to accommodate the realpath instead of hardcoding a GIT_PATH_MAX limit, but that change needs to be tested still.
Carlos Martín Nieto 0c49ec2d 2011-11-07T19:34:24 Implement p_rename Move the callers of git_futils_mv_atomic to use p_rename. Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
Brodie Rao 33127043 2011-10-14T14:18:02 fileops/posix: replace usage of "int mode" with "mode_t mode" Note: Functions exported from fileops take const mode_t, while the underlying POSIX wrappers take mode_t.
Vicent Marti 01d7fded 2011-09-22T20:44:30 Revert "Rewrite getenv to use Win32 version on Windows" This reverts commit e1b86444676b70154bf8ab450d429bdef57a8276.
Paul Betts e1b86444 2011-09-21T11:17:30 Rewrite getenv to use Win32 version on Windows
Paul Betts 7998ae5a 2011-09-19T12:36:12 Rewrite p_* functions to use Unicode and marshal to UTF8 internally
Vicent Marti bb742ede 2011-09-19T01:54:32 Cleanup legal data 1. The license header is technically not valid if it doesn't have a copyright signature. 2. The COPYING file has been updated with the different licenses used in the project. 3. The full GPLv2 header in each file annoys me.
Kirill A. Shutemov 2ba222c5 2011-07-15T17:31:24 posix: declare 'buf' argument of p_write() as const Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Vicent Marti f79026b4 2011-07-04T11:43:34 fileops: Cleanup Cleaned up the structure of the whole OS-abstraction layer. fileops.c now contains a set of utility methods for file management used by the library. These are abstractions on top of the original POSIX calls. There's a new file called `posix.c` that contains emulations/reimplementations of all the POSIX calls the library uses. These are prefixed with `p_`. There's a specific posix file for each platform (win32 and unix). All the path-related methods have been moved from `utils.c` to `path.c` and have their own prefix.