[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL 45/51] bsd-user: Implement mincore(2)
From: |
Warner Losh |
Subject: |
[PULL 45/51] bsd-user: Implement mincore(2) |
Date: |
Tue, 3 Oct 2023 17:32:09 -0600 |
From: Stacey Son <sson@FreeBSD.org>
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>
---
bsd-user/bsd-mem.h | 23 +++++++++++++++++++++++
bsd-user/freebsd/os-syscall.c | 4 ++++
2 files changed, 27 insertions(+)
diff --git a/bsd-user/bsd-mem.h b/bsd-user/bsd-mem.h
index b00ab3aed8e..0c8d96d9a43 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 b8c44cea0ff..f054241cd62 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);
--
2.41.0
- [PULL 34/51] bsd-user: Implement shm_rename(2) system call, (continued)
- [PULL 34/51] bsd-user: Implement shm_rename(2) system call, Warner Losh, 2023/10/03
- [PULL 37/51] bsd-user: Implement ipc_perm conversion between host and target., Warner Losh, 2023/10/03
- [PULL 39/51] bsd-user: Introduce bsd-mem.h to the source tree, Warner Losh, 2023/10/03
- [PULL 40/51] bsd-user: Implement mmap(2) and munmap(2), Warner Losh, 2023/10/03
- [PULL 32/51] bsd-user: Introduce freebsd/os-misc.h to the source tree, Warner Losh, 2023/10/03
- [PULL 35/51] bsd-user: Add bsd-mem.c to meson.build, Warner Losh, 2023/10/03
- [PULL 42/51] bsd-user: Implement msync(2), Warner Losh, 2023/10/03
- [PULL 41/51] bsd-user: Implement mprotect(2), Warner Losh, 2023/10/03
- [PULL 43/51] bsd-user: Implement mlock(2), munlock(2), mlockall(2), munlockall(2), minherit(2), Warner Losh, 2023/10/03
- [PULL 38/51] bsd-user: Implement shmid_ds conversion between host and target., Warner Losh, 2023/10/03
- [PULL 45/51] bsd-user: Implement mincore(2),
Warner Losh <=
- [PULL 49/51] bsd-user: Implement shmctl(2), Warner Losh, 2023/10/03
- [PULL 48/51] bsd-user: Implement shm_unlink(2) and shmget(2), Warner Losh, 2023/10/03
- [PULL 46/51] bsd-user: Implement do_obreak function, Warner Losh, 2023/10/03
- [PULL 44/51] bsd-user: Implment madvise(2) to match the linux-user implementation., Warner Losh, 2023/10/03
- [PULL 51/51] bsd-user: Add stubs for vadvise(), sbrk() and sstk(), Warner Losh, 2023/10/03
- [PULL 50/51] bsd-user: Implement shmat(2) and shmdt(2), Warner Losh, 2023/10/03
- [PULL 47/51] bsd-user: Implement shm_open(2), Warner Losh, 2023/10/03
- Re: [PULL 00/51] Bsd user mmap patches, Stefan Hajnoczi, 2023/10/05