diff options
| author | Stacey Son <sson@FreeBSD.org> | 2023-09-25 21:27:03 +0300 |
|---|---|---|
| committer | Warner Losh <imp@bsdimp.com> | 2023-10-03 17:14:07 -0600 |
| commit | 83b045ad4e0106836963185ed696991883104359 (patch) | |
| tree | 1a66ac8c0ab78008ea95bce29695c8cdb863f172 /bsd-user | |
| parent | 0c1ced42c84bdd8beeef6c40dff8d143cf409f15 (diff) | |
bsd-user: Implement mincore(2)
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230925182709.4834-18-kariem.taha2.7@gmail.com>
Diffstat (limited to 'bsd-user')
| -rw-r--r-- | bsd-user/bsd-mem.h | 23 | ||||
| -rw-r--r-- | bsd-user/freebsd/os-syscall.c | 4 |
2 files changed, 27 insertions, 0 deletions
diff --git a/bsd-user/bsd-mem.h b/bsd-user/bsd-mem.h index b00ab3aed8..0c8d96d9a4 100644 --- a/bsd-user/bsd-mem.h +++ b/bsd-user/bsd-mem.h @@ -189,4 +189,27 @@ static inline abi_long do_bsd_minherit(abi_long addr, abi_long len, return get_errno(minherit(g2h_untagged(addr), len, inherit)); } +/* mincore(2) */ +static inline abi_long do_bsd_mincore(abi_ulong target_addr, abi_ulong len, + abi_ulong target_vec) +{ + abi_long ret; + void *p; + abi_ulong vec_len = DIV_ROUND_UP(len, TARGET_PAGE_SIZE); + + if (!guest_range_valid_untagged(target_addr, len) + || !page_check_range(target_addr, len, PAGE_VALID)) { + return -TARGET_EFAULT; + } + + p = lock_user(VERIFY_WRITE, target_vec, vec_len, 0); + if (p == NULL) { + return -TARGET_EFAULT; + } + ret = get_errno(mincore(g2h_untagged(target_addr), len, p)); + unlock_user(p, target_vec, vec_len); + + return ret; +} + #endif /* BSD_USER_BSD_MEM_H */ diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c index b8c44cea0f..f054241cd6 100644 --- a/bsd-user/freebsd/os-syscall.c +++ b/bsd-user/freebsd/os-syscall.c @@ -839,6 +839,10 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1, ret = do_bsd_minherit(arg1, arg2, arg3); break; + case TARGET_FREEBSD_NR_mincore: /* mincore(2) */ + ret = do_bsd_mincore(arg1, arg2, arg3); + break; + #if defined(__FreeBSD_version) && __FreeBSD_version >= 1300048 case TARGET_FREEBSD_NR_shm_open2: /* shm_open2(2) */ ret = do_freebsd_shm_open2(arg1, arg2, arg3, arg4, arg5); |