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7b20478b |
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22-Nov-2023 |
Thomas Weißschuh <linux@weissschuh.net> |
tools/nolibc: drop custom definition of struct rusage A future commit will include linux/resource.h, which will conflict with the private definition of struct rusage in nolibc. Avoid the conflict by dropping the private definition and use the one from the UAPI headers. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/lkml/20231123-nolibc-rlimit-v1-1-a428b131de2a@weissschuh.net/ Acked-by: Willy Tarreau <w@1wt.eu>
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bb6ec2e9 |
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23-Oct-2023 |
Mark Brown <broonie@kernel.org> |
tools/nolibc: Use linux/wait.h rather than duplicating it Linux defines a few custom flags for waitpid() which aren't currently provided by nolibc, make them available to nolibc based programs by just including linux/wait.h where they are defined instead of defining our own copy of the flags. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
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af93807e |
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15-Jul-2023 |
Zhangjin Wu <falcon@tinylab.org> |
tools/nolibc: remove the old sys_stat support The statx manpage [1] shows that it has been supported from Linux 4.11 and glibc 2.28, the Linux support can be checked for all of the architectures with this command: $ git grep -r statx v4.11 arch/ include/uapi/asm-generic/unistd.h \ | grep -E "aarch64|arm|mips|s390|x86|:include/uapi" Besides riscv and loongarch, all of the nolibc supported architectures have added sys_statx from Linux v4.11. riscv is mainlined to v4.15, loongarch is mainlined to v5.19, both of them use the generic unistd.h, so, they have added sys_statx from their first mainline versions. The current oldest stable branch is v4.14, only reserving sys_statx still preserves compatibility with all of the supported stable branches, So, let's remove the old arch related and dependent sys_stat support completely. This is friendly to the future new architecture porting. [1]: https://man7.org/linux/man-pages/man2/statx.2.html Signed-off-by: Zhangjin Wu <falcon@tinylab.org> Signed-off-by: Willy Tarreau <w@1wt.eu>
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788aca91 |
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07-Jul-2023 |
Zhangjin Wu <falcon@tinylab.org> |
tools/nolibc: types.h: add RB_ flags for reboot() Both glibc and musl provide RB_ flags via <sys/reboot.h> for reboot(), they don't need to include <linux/reboot.h>, let nolibc provide RB_ flags too. Signed-off-by: Zhangjin Wu <falcon@tinylab.org> Signed-off-by: Willy Tarreau <w@1wt.eu>
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924e9539 |
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07-Jul-2023 |
Zhangjin Wu <falcon@tinylab.org> |
tools/nolibc: clean up mmap() routine Do several cleanups together: - Since all supported architectures have my_syscall6() now, remove the #ifdef check. - Move the mmap() related macros to tools/include/nolibc/types.h and reuse most of them from <linux/mman.h> - Apply the new generic __sysret() to convert the calling of sys_map() to oneline code Note, since MAP_FAILED is -1 on Linux, so we can use the generic __sysret() which returns -1 upon error and still satisfy user land that checks for MAP_FAILED. Suggested-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/lkml/20230702192347.GJ16233@1wt.eu/ Signed-off-by: Zhangjin Wu <falcon@tinylab.org> Signed-off-by: Willy Tarreau <w@1wt.eu>
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87b9fa66 |
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27-May-2023 |
Thomas Weißschuh <linux@weissschuh.net> |
tools/nolibc: support nanoseconds in stat() Keep backwards compatibility through unions. The compatibility macros like #define st_atime st_atim.tv_sec as documented in stat(3type) don't work for nolibc because it would break with other stat-like structures that contain the field st_atime. The stx_atime, stx_mtime, stx_ctime are in type of 'struct statx_timestamp', which is incompatible with 'struct timespec', should be converted explicitly. /* include/uapi/linux/stat.h */ struct statx_timestamp { __s64 tv_sec; __u32 tv_nsec; __s32 __reserved; }; /* include/uapi/linux/time.h */ struct timespec { __kernel_old_time_t tv_sec; /* seconds */ long tv_nsec; /* nanoseconds */ }; Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/linux-riscv/3a3edd48-1ace-4c89-89e8-9c594dd1b3c9@t-8ch.de/ Co-authored-by: Zhangjin Wu <falcon@tinylab.org> Signed-off-by: Zhangjin Wu <falcon@tinylab.org> [wt: squashed Zhangjin & Thomas' patches into one to preserve "bisectability"] Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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72ffbc67 |
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28-Apr-2023 |
Thomas Weißschuh <linux@weissschuh.net> |
tools/nolibc: remove LINUX_REBOOT_ constants The same constants and some more have been exposed to userspace via linux/reboot.h for a long time. To avoid conflicts and trim down nolibc a bit drop the custom definitions. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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8c934d48 |
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25-Mar-2023 |
Thomas Weißschuh <linux@weissschuh.net> |
tools/nolibc: add helpers for wait() signal exits These are useful for users and will also be used in an upcoming testcase. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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a438e528 |
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04-Mar-2023 |
Feiyang Chen <chenfeiyang@loongson.cn> |
tools/nolibc: Include linux/fcntl.h and remove duplicate code Include linux/fcntl.h for O_* and AT_*. asm/fcntl.h is included by linux/fcntl.h, so it can be safely removed. Signed-off-by: Feiyang Chen <chenfeiyang@loongson.cn> Acked-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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1c3a4c10 |
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04-Mar-2023 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc: check for S_I* macros before defining them Defining S_I* flags in types.h can cause some build failures if linux/stat.h is included prior to it. But if not defined, some toolchains that include some glibc parts will in turn fail because linux/stat.h already takes care of avoiding these definitions when glibc is present. Let's preserve the macros here but first include linux/stat.h and check for their definition before doing so. We also define the previously missing permission macros so that we don't get a different behavior depending on the first include found. Cc: Feiyang Chen <chenfeiyang@loongson.cn> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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55abdd1f |
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09-Jan-2023 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc: fix missing includes causing build issues at -O0 After the nolibc includes were split to facilitate portability from standard libcs, programs that include only what they need may miss some symbols which are needed by libgcc. This is the case for raise() which is needed by the divide by zero code in some architectures for example. Regardless, being able to include only the apparently needed files is convenient. Instead of trying to move all exported definitions to a single file, since this can change over time, this patch takes another approach consisting in including the nolibc header at the end of all standard include files. This way their types and functions are already known at the moment of inclusion, and including any single one of them is sufficient to bring all the required ones. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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16f5cea7 |
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09-Jan-2023 |
Warner Losh <imp@bsdimp.com> |
tools/nolibc: Fix S_ISxxx macros The mode field has the type encoded as an value in a field, not as a bit mask. Mask the mode with S_IFMT instead of each type to test. Otherwise, false positives are possible: eg S_ISDIR will return true for block devices because S_IFDIR = 0040000 and S_IFBLK = 0060000 since mode is masked with S_IFDIR instead of S_IFMT. These macros now match the similar definitions in tools/include/uapi/linux/stat.h. Signed-off-by: Warner Losh <imp@bsdimp.com> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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feaf7565 |
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09-Jan-2023 |
Sven Schnelle <svens@linux.ibm.com> |
nolibc: fix fd_set type The kernel uses unsigned long for the fd_set bitmap, but nolibc use u32. This works fine on little endian machines, but fails on big endian. Convert to unsigned long to fix this. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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5a18d07c |
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29-Mar-2022 |
Ammar Faizi <ammarfaizi2@gnuweeb.org> |
tools/nolibc/types: Implement `offsetof()` and `container_of()` macro Implement `offsetof()` and `container_of()` macro. The first use case of these macros is for `malloc()`, `realloc()` and `free()`. Acked-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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96d2a131 |
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21-Mar-2022 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc/types: add poll() and waitpid() flag definitions - POLLIN etc were missing, so poll() could only be used with timeouts. - WNOHANG was not defined and is convenient to check if a child is still running Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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023033fe |
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07-Feb-2022 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc/types: define PATH_MAX and MAXPATHLEN These ones are often used and commonly set by applications to fallback values. Let's fix them both to agree on PATH_MAX=4096 by default, as is already present in linux/limits.h. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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51469d5a |
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07-Feb-2022 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc/types: define EXIT_SUCCESS and EXIT_FAILURE These ones are found in some examples found in man pages and ease portability tests. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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eba6d00d |
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07-Feb-2022 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc/types: move makedev to types.h and make it a macro The makedev() man page says it's supposed to be a macro and that some OSes have it with the other ones in sys/types.h so it now makes sense to move it to types.h as a macro. Let's also define major() and minor() that perform the reverse operation. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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306c9fd4 |
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13-Feb-2022 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc/types: make FD_SETSIZE configurable The macro was hard-coded to 256 but it's common to see it redefined. Let's support this and make sure we always allocate enough entries for the cases where it wouldn't be multiple of 32. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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8cb98b3f |
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13-Feb-2022 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc/types: move the FD_* functions to macros in types.h FD_SET, FD_CLR, FD_ISSET, FD_ZERO are often expected to be macros and not functions. In addition we already have a file dedicated to such macros and types used by syscalls, it's types.h, so let's move them there and turn them to macros. FD_CLR() and FD_ISSET() were missing, so they were added. FD_ZERO() now deals with its own loop so that it doesn't rely on memset() that sets one byte at a time. Cc: David Laight <David.Laight@aculab.com> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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cc7a492a |
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07-Feb-2022 |
Willy Tarreau <w@1wt.eu> |
tools/nolibc/types: split syscall-specific definitions into their own files The macros and type definitions used by a number of syscalls were moved to types.h where they will be easier to maintain. A few of them are arch-specific and must not be moved there (e.g. O_*, sys_stat_struct). A warning about them was placed at the top of the file. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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