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LibCore: Add syscall wrapper for mount()

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This commit is contained in:
Andreas Kling 2021-12-16 20:23:21 +01:00
parent e923762afc
commit f69bd3bd46
2 changed files with 36 additions and 0 deletions
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34
Userland/Libraries/LibCore/System.cpp
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@ -90,6 +90,22 @@ ErrorOr<void> setgroups(Span<gid_t const> gids)
return Error::from_syscall("setgroups"sv, -errno); return Error::from_syscall("setgroups"sv, -errno);
return {}; return {};
} }
ErrorOr<void> mount(int source_fd, StringView target, StringView fs_type, int flags)
{
if (target.is_null() || fs_type.is_null())
return Error::from_errno(EFAULT);
Syscall::SC_mount_params params {
{ target.characters_without_null_termination(), target.length() },
{ fs_type.characters_without_null_termination(), fs_type.length() },
source_fd,
flags
};
int rc = syscall(SC_mount, &params);
HANDLE_SYSCALL_RETURN_VALUE("mount", rc, {});
}
#endif #endif
ErrorOr<void> sigaction(int signal, struct sigaction const* action, struct sigaction* old_action) ErrorOr<void> sigaction(int signal, struct sigaction const* action, struct sigaction* old_action)
@ -431,4 +447,22 @@ ErrorOr<bool> isatty(int fd)
return rc == 1; return rc == 1;
} }
ErrorOr<void> symlink(StringView target, StringView link_path)
{
#ifdef __serenity__
Syscall::SC_symlink_params params {
.target = { target.characters_without_null_termination(), target.length() },
.linkpath = { link_path.characters_without_null_termination(), link_path.length() },
};
int rc = syscall(SC_symlink, &params);
HANDLE_SYSCALL_RETURN_VALUE("symlink"sv, rc, {});
#else
String target_string = target;
String link_path_string = link_path;
if (::symlink(target_string.characters(), link_path_string.characters()) < 0)
return Error::from_syscall("symlink"sv, -errno);
return {};
#endif
}
} }

2
Userland/Libraries/LibCore/System.h
View file

@ -27,6 +27,7 @@ ErrorOr<void> sendfd(int sockfd, int fd);
ErrorOr<int> recvfd(int sockfd, int options); ErrorOr<int> recvfd(int sockfd, int options);
ErrorOr<void> ptrace_peekbuf(pid_t tid, void const* tracee_addr, Bytes destination_buf); ErrorOr<void> ptrace_peekbuf(pid_t tid, void const* tracee_addr, Bytes destination_buf);
ErrorOr<void> setgroups(Span<gid_t const>); ErrorOr<void> setgroups(Span<gid_t const>);
ErrorOr<void> mount(int source_fd, StringView target, StringView fs_type, int flags);
#endif #endif
ErrorOr<void> sigaction(int signal, struct sigaction const* action, struct sigaction* old_action); ErrorOr<void> sigaction(int signal, struct sigaction const* action, struct sigaction* old_action);
@ -61,5 +62,6 @@ ErrorOr<void> seteuid(uid_t);
ErrorOr<void> setgid(gid_t); ErrorOr<void> setgid(gid_t);
ErrorOr<void> setegid(gid_t); ErrorOr<void> setegid(gid_t);
ErrorOr<bool> isatty(int fd); ErrorOr<bool> isatty(int fd);
ErrorOr<void> symlink(StringView target, StringView link_path);
} }