diff options
| author | Pawel Biernacki <kaktus@FreeBSD.org> | 2026-05-30 12:15:21 +0000 |
|---|---|---|
| committer | Pawel Biernacki <kaktus@FreeBSD.org> | 2026-05-30 19:52:58 +0000 |
| commit | a64148e21bb4ac976345cbedbd32942f97f07cc1 (patch) | |
| tree | 26ecb3de5b2f3310b96e7cd529aa3bee8c727b10 | |
| parent | eda74fe47993f1d62e7c110850def6960b55291e (diff) | |
linux: Add support for PR_SET_VMA to prctl(2)
Implement dummy support for PR_SET_VMA with PR_SET_VMA_ANON_NAME in
prctl(2). This prevents applications from receiving EINVAL when
attempting to name anonymous memory regions.
| -rw-r--r-- | sys/compat/linux/linux_misc.c | 7 | ||||
| -rw-r--r-- | sys/compat/linux/linux_misc.h | 2 |
2 files changed, 9 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c index f89758f41ba0..eafba4f4bd19 100644 --- a/sys/compat/linux/linux_misc.c +++ b/sys/compat/linux/linux_misc.c @@ -1835,6 +1835,13 @@ linux_prctl(struct thread *td, struct linux_prctl_args *args) linux_msg(td, "unsupported prctl PR_SET_PTRACER"); error = EINVAL; break; + case LINUX_PR_SET_VMA: + if (args->arg2 != LINUX_PR_SET_VMA_ANON_NAME) { + linux_msg(td, "unsupported prctl PR_SET_VMA attr %ju", + (uintmax_t)args->arg2); + error = EINVAL; + } + break; default: linux_msg(td, "unsupported prctl option %d", args->option); error = EINVAL; diff --git a/sys/compat/linux/linux_misc.h b/sys/compat/linux/linux_misc.h index 2044f23f30ee..196f9372d4bf 100644 --- a/sys/compat/linux/linux_misc.h +++ b/sys/compat/linux/linux_misc.h @@ -62,6 +62,8 @@ #define LINUX_PR_SET_NO_NEW_PRIVS 38 /* Set no_new_privs attribute */ #define LINUX_PR_GET_NO_NEW_PRIVS 39 /* Get no_new_privs attribute */ #define LINUX_PR_SET_PTRACER 1499557217 +#define LINUX_PR_SET_VMA 1398164801 +#define LINUX_PR_SET_VMA_ANON_NAME 0 #define LINUX_MAX_COMM_LEN 16 /* Maximum length of the process name. */ |