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More work towards getting bash to build.

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Implemented some syscalls: dup(), dup2(), getdtablesize().
FileHandle is now a retainable, since that's needed for dup()'ed fd's.
I didn't really test any of this beyond a basic smoke check.
This commit is contained in:
Andreas Kling 2018-11-05 19:01:22 +01:00
parent 82f84bab11
commit 9f2b9c82bf
17 changed files with 114 additions and 23 deletions
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17
LibC/unistd.cpp
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@ -190,5 +190,22 @@ int isatty(int fd)
__RETURN_WITH_ERRNO(rc, 1, 0);
}
int getdtablesize()
{
int rc = Syscall::invoke(Syscall::Getdtablesize);
__RETURN_WITH_ERRNO(rc, 1, 0);
}
int dup(int old_fd)
{
int rc = Syscall::invoke(Syscall::Dup, (dword)old_fd);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
int dup2(int old_fd, int new_fd)
{
int rc = Syscall::invoke(Syscall::Dup2, (dword)old_fd, (dword)new_fd);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
}