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| author | Thomas Weißschuh <linux@weissschuh.net> | 2023-11-22 23:49:43 +0100 |
|---|---|---|
| committer | Thomas Weißschuh <linux@weissschuh.net> | 2023-12-11 22:38:35 +0100 |
| commit | a0bb5f88fc3d72bc92c24a631f2c7794362efac1 (patch) | |
| tree | 8b79d1296b139f9e9b92e546c9e71f68a67d0072 /tools/include | |
| parent | 7b20478b777c3be39a2b69b08a6c0b50c10105f1 (diff) | |
| download | linux-a0bb5f88fc3d72bc92c24a631f2c7794362efac1.tar.gz linux-a0bb5f88fc3d72bc92c24a631f2c7794362efac1.tar.bz2 linux-a0bb5f88fc3d72bc92c24a631f2c7794362efac1.zip | |
tools/nolibc: add support for getrlimit/setrlimit
The implementation uses the prlimit64 systemcall as that is available on
all architectures.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/lkml/20231123-nolibc-rlimit-v1-2-a428b131de2a@weissschuh.net/
Acked-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/nolibc/sys.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h index 2f359cb03d10..dda9dffd1d74 100644 --- a/tools/include/nolibc/sys.h +++ b/tools/include/nolibc/sys.h @@ -21,6 +21,7 @@ #include <linux/fcntl.h> /* for O_* and AT_* */ #include <linux/stat.h> /* for statx() */ #include <linux/prctl.h> +#include <linux/resource.h> #include "arch.h" #include "errno.h" @@ -899,6 +900,43 @@ int reboot(int cmd) /* + * int getrlimit(int resource, struct rlimit *rlim); + * int setrlimit(int resource, const struct rlimit *rlim); + */ + +static __attribute__((unused)) +int sys_prlimit64(pid_t pid, int resource, + const struct rlimit64 *new_limit, struct rlimit64 *old_limit) +{ + return my_syscall4(__NR_prlimit64, pid, resource, new_limit, old_limit); +} + +static __attribute__((unused)) +int getrlimit(int resource, struct rlimit *rlim) +{ + struct rlimit64 rlim64; + int ret; + + ret = __sysret(sys_prlimit64(0, resource, NULL, &rlim64)); + rlim->rlim_cur = rlim64.rlim_cur; + rlim->rlim_max = rlim64.rlim_max; + + return ret; +} + +static __attribute__((unused)) +int setrlimit(int resource, const struct rlimit *rlim) +{ + struct rlimit64 rlim64 = { + .rlim_cur = rlim->rlim_cur, + .rlim_max = rlim->rlim_max, + }; + + return __sysret(sys_prlimit64(0, resource, &rlim64, NULL)); +} + + +/* * int sched_yield(void); */ |