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* libfile: factor out read_file_into_buf helperAhmad Fatoum2024-03-051-0/+4
| | | | | | | | | | | We do open -> read_full -> close at a number of places. Add a function that does this all at once and start using it to implement read_file. More users can follow later. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20240304190038.3486881-13-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: implement read_fd counterpart to read_fileAhmad Fatoum2023-12-131-0/+2
| | | | | | | | | | Files opened with O_TMPFILE have no name, so read_file can't be used with them. Therefore add a read_fd function, which slurps all a file's contents into a buffer. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20231122170323.15175-2-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: implement new pread_fullAhmad Fatoum2022-03-281-0/+1
| | | | | | | | We already have pwrite_full, add pread_full for symmetry. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220318144942.498124-1-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: Add copy_fd()Sascha Hauer2021-06-231-0/+1
| | | | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Link: https://lore.barebox.org/20210623043359.18391-3-s.hauer@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* include: add SPDX GPL-2.0-only license tags for files without licensing ↵Roland Hieber2020-02-171-0/+1
| | | | | | | | | | | information According to our /README, GPL-2.0-only applies for the whole project except noted otherwise. Signed-off-by: Roland Hieber <rohieb@rohieb.name> Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: Introduce pwrite_full()Andrey Smirnov2018-08-311-0/+1
| | | | | | | | | | Analogous to what we have with write()/write_full(), introduce a lightweight wrapper around pwrite() that guarantees the either all data is going to be written or a negative error code would be returned. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: implement new helper write_file_flash()Uwe Kleine-König2018-06-081-0/+1
| | | | | | | | Compared to write_file() this new function also calls erase() to be suitable for flash devices. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/tftp-workaround'Sascha Hauer2018-02-081-0/+4
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| * libfile: implement a function to cache a fileSascha Hauer2018-01-251-0/+2
| | | | | | | | | | | | | | | | | | | | Due to the nature of TFTP which can't lseek and due to the silliness of our filesystem implementation which can't cache accesses we have to manually cache files on TFTP filesystems sometimes. Make it easier for them by providing a cache_file() function which copies the file from TFTP to RAM. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * libfile: implement make_tempSascha Hauer2018-01-251-0/+2
| | | | | | | | | | | | | | | | | | | | Create a make_temp() function which creates a name for a temporary file. Since we do not have any concurrency in barebox we do not need to create the file right away and can leave that to the caller. Unlike unix mktemp the resulting filename is dynamically allocated and must be freed by the caller. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | libfile: Make write_file buffer constSascha Hauer2018-01-311-1/+1
|/ | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: Change write_full to be have const bufMarkus Pargmann2016-07-081-1/+1
| | | | | | | write() uses a const pointer so write_full should do the same. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* move unlink_recursive declaration to libfile.hSascha Hauer2016-04-151-0/+2
| | | | | | | unlink_recursive is a file utility function, so move the prototype to libfile.h Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* move make_directory declaration to libfile.hSascha Hauer2016-04-151-0/+3
| | | | | | | As a utility function for file handling make_directory() is well suited for libfile. Move it there. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: move open_and_lseek() to libfileSascha Hauer2016-04-151-0/+2
| | | | | | | libfile is a collection of helpers for handling files. open_and_lseek() is a perfect match for this, so move it there. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: Add copy_recursiveSascha Hauer2014-11-061-0/+2
| | | | | | To recursively copy a directory tree. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* libfile: add compare_file functionSascha Hauer2014-10-091-0/+2
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* read_file: introduce read_file_2Sascha Hauer2014-08-071-0/+3
| | | | | | | | | | | | | read_file has some limitations: - It is not possible to check the error code since read_file returns NULL for failure - It is not possible to limit the buffer size to sensible limits. This patch introduces read_file_2 which doesn't have these limitations. read_file becomes a wrapper around read_file_2. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* move file helper functions to separate fileSascha Hauer2014-08-071-0/+15
We have our file helper functions in several places. Move them all to lib/libfile.c. With this we no longer have file helpers in fs/fs.c which contains the core fs functions and no functions in lib/libbb.c which are not from busybox. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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