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LibCore: Add syscall wrapper for dup()

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This commit is contained in:
Andreas Kling 2021-11-28 12:08:28 +01:00
parent cb9cac4e40
commit 83056efc1a
2 changed files with 9 additions and 0 deletions
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8
Userland/Libraries/LibCore/System.cpp
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@ -196,6 +196,14 @@ ErrorOr<void> kill(pid_t pid, int signal)
return {}; return {};
} }
ErrorOr<int> dup(int source_fd)
{
int fd = ::dup(source_fd);
if (fd < 0)
return Error::from_syscall("dup"sv, -errno);
return fd;
}
ErrorOr<int> dup2(int source_fd, int destination_fd) ErrorOr<int> dup2(int source_fd, int destination_fd)
{ {
int fd = ::dup2(source_fd, destination_fd); int fd = ::dup2(source_fd, destination_fd);

1
Userland/Libraries/LibCore/System.h
View file

@ -32,6 +32,7 @@ ErrorOr<struct stat> stat(StringView path);
ErrorOr<ssize_t> read(int fd, Bytes buffer); ErrorOr<ssize_t> read(int fd, Bytes buffer);
ErrorOr<ssize_t> write(int fd, ReadonlyBytes buffer); ErrorOr<ssize_t> write(int fd, ReadonlyBytes buffer);
ErrorOr<void> kill(pid_t, int signal); ErrorOr<void> kill(pid_t, int signal);
ErrorOr<int> dup(int source_fd);
ErrorOr<int> dup2(int source_fd, int destination_fd); ErrorOr<int> dup2(int source_fd, int destination_fd);
ErrorOr<String> ptsname(int fd); ErrorOr<String> ptsname(int fd);
ErrorOr<String> gethostname(); ErrorOr<String> gethostname();