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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
| commit | 8c1ab65c0f548d20b7f177bdb736daaf603340e1 (patch) | |
| tree | df55b7e75bf43f2bf500845b105afe3ac3a5157e /libc-top-half/musl/src/unistd/nice.c | |
| parent | Initial commit. (diff) | |
| download | wasi-libc-8c1ab65c0f548d20b7f177bdb736daaf603340e1.tar.xz wasi-libc-8c1ab65c0f548d20b7f177bdb736daaf603340e1.zip | |
Adding upstream version 0.0~git20221206.8b7148f.upstream/0.0_git20221206.8b7148f
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libc-top-half/musl/src/unistd/nice.c')
| -rw-r--r-- | libc-top-half/musl/src/unistd/nice.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/unistd/nice.c b/libc-top-half/musl/src/unistd/nice.c new file mode 100644 index 0000000..1c2295f --- /dev/null +++ b/libc-top-half/musl/src/unistd/nice.c @@ -0,0 +1,23 @@ +#include <unistd.h> +#include <errno.h> +#include <sys/resource.h> +#include <limits.h> +#include "syscall.h" + +int nice(int inc) +{ + int prio = inc; + // Only query old priority if it can affect the result. + // This also avoids issues with integer overflow. + if (inc > -2*NZERO && inc < 2*NZERO) + prio += getpriority(PRIO_PROCESS, 0); + if (prio > NZERO-1) prio = NZERO-1; + if (prio < -NZERO) prio = -NZERO; + if (setpriority(PRIO_PROCESS, 0, prio)) { + if (errno == EACCES) + errno = EPERM; + return -1; + } else { + return prio; + } +} |