LuminaSensum/barebox

Fork: 0

LuminaSensum / barebox

History for barebox / fs / fs.c

2018-10-19	89e7c63 Browse files » fs: implement d_revalidate ... d_revalidate is useful when filesystems change under the hood of the fs layer. This can happen with network filesystems or with devfs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 19 Oct 2018
2018-09-26	9ad58a9 Browse files » fs: stat: Do not forget to set errno ... stat() needs to set errno correctly when returning with an error. Fixes: b3fbfad7ae ("fs: dentry cache implementation") Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 26 Sep 2018
2018-09-26	822dfbd Browse files » fs: open: Do not forget to set errno ... When the initial lookup fails in open we have to go to the error path which sets errno correctly rather than returning directly. Fixes: b3fbfad7ae ("fs: dentry cache implementation") Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 26 Sep 2018
2018-07-11	b3fbfad Browse files » fs: dentry cache implementation ... This adds the Linux dentry cache implementation to barebox. Until now every filesystem driver resolves the full path to a file for itself. This leads to code duplication and is error prone since resolving paths is a complicated task. Also it can narrow down the lookup performance since barebox only knows ASCII paths and has no way of caching lookups. With this patch we get the Linux dcache implementation. The path resolving code from fs/namei.c is nearly taken as-is, minus the RCU and locking code. Dcaching is made simple as of now: We simply cache everything and never release any dentries. Although we do reference counting for inodes and dentries it is effectively not used yet. We never free anything until a fs is unmounted in which case we free everything no matter if references are taken or not. This patch also contains a wrapper in fs/legacy.c to support filesystems with the old API. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 11 Jul 2018
2018-06-14	e10efc5 Browse files » fs: fix memory access via /dev/mem for MIPS64 ... lseek checks for non-negative in-memory offsets (addresses), failing otherwise. However negative address 0xffffffffXXXXXXXX is a valid MIPS64 virtual address. Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Peter Mamonov authored on 13 Jun 2018 Sascha Hauer committed on 14 Jun 2018
2018-04-06	7156e85 Browse files » fs: Fix finding correct directory for mkdir/rmdir ... When there are links in the path mkdir/rmdir are called with then canonicalize_path is needed which resolves the links. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 6 Apr 2018
	0afcc77 Browse files » fs: Cleanup whitespace damage ... fs.c has some whitespaces where there should be tabs. Fix it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 6 Apr 2018
	74e2063 Browse files » fs: Move mem_write/mem_read to devfs-core ... fs.c is already heavily filled with code. Move mem_write/mem_read to devfs-core where it fits better. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 6 Apr 2018
2018-03-19	ca88091 Browse files » fs: check pointer returned by get_fsdevice_by_path before dereferencing ... In __canonicalize_path() we dereference the pointer returned by get_fsdevice_by_path() without checking if the pointer is NULL or not. When the pointer is NULL it leads to an Ooops. Ooops, address error on load or ifetch! $ 0 : 00000000 00000001 a0000026 a0811c10 $ 4 : a0402e60 a0402e48 a0811c00 a0402e58 $ 8 : 00000001 00000000 0000005a 00000023 $12 : 00000000 00000002 00601021 00000000 $16 : a0402e60 a0402e50 a0402e39 a0810000 $20 : a0402e38 a0811420 a0811424 00000000 $24 : 00000000 a080de10 $28 : 87f87d40 a03ffa68 a0810000 a080ce30 Hi : 00000002 Lo : 00000000 epc : a080ce34 ra : a080ce30 Status: 00000006 Cause : 40008010 Config: 80040483 ### ERROR ### Please RESET the board ### Fixes: d79a81736 fs: Don't bother filesystems without link support with additional stat() calls Signed-off-by: Gaël PORTAY <gael.portay@savoirfairelinux.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Gaël PORTAY authored on 18 Mar 2018 Sascha Hauer committed on 19 Mar 2018
2018-02-08	0dce537 Browse files » Merge branch 'for-next/tftp-workaround' Sascha Hauer committed on 8 Feb 2018
2018-02-05	87aa483 Browse files » fs: add support loop mount offset ... When loop mounting, allow to specify an offset into the file, similarly to the losetup offset option. Multiplicative suffixes are supported. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Philipp Zabel authored on 1 Feb 2018 Sascha Hauer committed on 5 Feb 2018
2018-01-26	01811d0 Browse files » fs: Fix memory leak in mount() ... "path" is allocated by normalise_path() and thus must be freed. This was done in the error path, but not in the success path. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 26 Jan 2018
2018-01-25	3f86edf Browse files » fs: implement is_tftp_fs() ... Some commands need files in which they can lseek backwards which is particularly not possible on TFTP. Instead of hiding this behind can_lseek_backward() create a function for it which tests if the file is on TFTP directly rather than using different lseek operations. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 25 Jan 2018
2018-01-22	5ebdae4 Browse files » Merge branch 'for-next/misc' Sascha Hauer committed on 22 Jan 2018
2018-01-17	ac9d377 Browse files » move parseopt to lib/ ... Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Antony Pavlov authored on 14 Jan 2018 Sascha Hauer committed on 17 Jan 2018
2018-01-10	e0e4c72 Browse files » fs: implement ftruncate ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 10 Jan 2018
2017-09-06	d79a817 Browse files » fs: Don't bother filesystems without link support with additional stat() calls ... In __canonicalize_path() we only call stat() to know if the path is a link or not. When the filesystem doesn't support links we already know that it's not a link, so we do not need to call stat(). This helps the tftp filesystem since the parent directories of a file to be opened won't be stat()ed anymore, something tftp does not support. Fixes: a602bebc fs: Implement links to directories Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 6 Sep 2017
2017-09-06	eed363f Browse files » fs: avoid pathes with '//' in __canonicalize_path() ... In __canonicalize_path pathes beginning with '//' can occur. This is normally not a problem since normalize_path() will clean this up, but it means we cannot call get_fsdevice_by_path() on these pathes in this function, as needed in the next patch. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 6 Sep 2017
2017-06-27	897c5b6 Browse files » fs: Make locally used function canonicalize_dir() static ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 27 Jun 2017
2017-06-14	2534126 Browse files » Merge branch 'for-next/misc' Sascha Hauer committed on 14 Jun 2017
2017-06-06	f3cd5b1 Browse files » fs: add cdev_create_loop and cdev_remove_loop for loop mount option ... Allow to create a loopback cdev from a file. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Fixed up with: fs: Makefile: Add parseopt to all builds parseopt.h was included to fs.c with commit 9248b, but parseopt.o has a dependency to CONFIG_FS_NFS. Moved parseopt.o to the default build to eliminate build failures. Signed-off-by: Daniel Schultz <d.schultz@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Philipp Zabel authored on 1 Jun 2017 Sascha Hauer committed on 6 Jun 2017
2017-05-11	944bf0e Browse files » fixup! fs: Implement links to directories Sascha Hauer committed on 11 May 2017
	a602beb Browse files » fs: Implement links to directories ... So far links can only point to files. Implement links to directories. With this all kinds of links are supported: - relative links - absolute links - links including ".." - link loops (are detected, return -EMLINK) Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 11 May 2017
	7f01c05 Browse files » fs: drop path_check_prereq() ... path_check_prereq() has some bugs: - It's called with S_IFLNK, but this is effectively a no-op because this case is not implemented in the function - It uses lstat, but if stat or lstat should be used depends on the usecase: For opendir() stat() must be used, since we are not interested in the link, but in the target. For readlink() lstat() must be used since we are indeed interested in the link, not the target. It's easier and better understandable to open code the functionality where it's needed, so drop path_check_prereq() and do the right thing where called. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 11 May 2017
2017-05-10	85dffaa Browse files » fs: Create automount entries for the default mount pathes ... In barebox the default mount path for a cdev is /mnt/<cdevname> which can be mounted with "mount <cdevname>" without specifying a target path explicitly. Simplify this further by creating automount entries for the default mount pathes which makes a manual mount completely unnecessary. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 10 May 2017
2017-03-03	2eacc57 Browse files » lseek: tighten error checking and allow negative offsets for SEEK_END ... Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Uwe Kleine-König authored on 2 Mar 2017 Sascha Hauer committed on 3 Mar 2017
2017-03-02	711bb18 Browse files » lseek: ensure errno is set on failure and return -1 ... All error paths before calling the driver's lseek callback return -1 and set errno. Do the same if the callback returns an error. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Uwe Kleine-König authored on 23 Feb 2017 Sascha Hauer committed on 2 Mar 2017
2017-01-11	9bdd6c9 Browse files » fs: Remove O_TRUNC check for devices when open files ... Don't check for the file type here. Devices may have truncate callbacks. Otherwise the caller should check if O_TRUNC is possible. Signed-off-by: Teresa Remmet <t.remmet@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Teresa Remmet authored on 25 Nov 2016 Sascha Hauer committed on 11 Jan 2017
2016-07-22	facda5a Browse files » fs: Check for correct open mode ... Check that readonly openen files is not written to and writeonly files is not read from. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 22 Jul 2016
2016-05-09	55aca0a Browse files » Merge branch 'for-next/include-cleanup' Sascha Hauer committed on 9 May 2016