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34 lines
698 B
34 lines
698 B
#include <ulib.h>
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#include <unistd.h>
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#include <file.h>
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#include <stat.h>
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int main(int argc, char *argv[]);
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static int
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initfd(int fd2, const char *path, uint32_t open_flags) {
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int fd1, ret;
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if ((fd1 = open(path, open_flags)) < 0) {
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return fd1;
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}
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if (fd1 != fd2) {
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close(fd2);
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ret = dup2(fd1, fd2);
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close(fd1);
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}
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return ret;
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}
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void
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umain(int argc, char *argv[]) {
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int fd;
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if ((fd = initfd(0, "stdin:", O_RDONLY)) < 0) {
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warn("open <stdin> failed: %e.\n", fd);
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}
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if ((fd = initfd(1, "stdout:", O_WRONLY)) < 0) {
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warn("open <stdout> failed: %e.\n", fd);
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}
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int ret = main(argc, argv);
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exit(ret);
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}
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