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LibCore: Add syscall wrapper for dup2()

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This commit is contained in:
Andreas Kling 2021-11-24 22:36:28 +01:00
parent 71bc9bee0a
commit a152b1f215
2 changed files with 9 additions and 0 deletions
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8
Userland/Libraries/LibCore/System.cpp
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@ -179,4 +179,12 @@ ErrorOr<void> kill(pid_t pid, int signal)
return {}; return {};
} }
ErrorOr<int> dup2(int source_fd, int destination_fd)
{
int fd = ::dup2(source_fd, destination_fd);
if (fd < 0)
return Error::from_syscall("dup2"sv, -errno);
return fd;
}
} }

1
Userland/Libraries/LibCore/System.h
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@ -30,5 +30,6 @@ ErrorOr<struct stat> stat(StringView path);
ErrorOr<ssize_t> read(int fd, void* buffer, size_t buffer_size); ErrorOr<ssize_t> read(int fd, void* buffer, size_t buffer_size);
ErrorOr<ssize_t> write(int fd, void const* data, size_t data_size); ErrorOr<ssize_t> write(int fd, void const* data, size_t data_size);
ErrorOr<void> kill(pid_t, int signal); ErrorOr<void> kill(pid_t, int signal);
ErrorOr<int> dup2(int source_fd, int destination_fd);
} }