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Matheus
28 lines
488 B
C
28 lines
488 B
C
#include <kernel/syscalls.h>
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#include <kernel/vfs.h>
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#include <kernel/file.h>
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syscallret_t syscall_isatty(context_t *context, int fd) {
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syscallret_t ret = {
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.ret = -1
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};
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file_t *file = fd_get(fd);
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if (file == NULL) {
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ret.errno = EBADF;
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return ret;
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}
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// mlibc expects isatty to return 1 if a terminal and 0 if not.
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VOP_LOCK(file->vnode);
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int e = VOP_ISATTY(file->vnode);
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VOP_UNLOCK(file->vnode);
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ret.errno = e;
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ret.ret = e ? 0 : 1;
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fd_release(file);
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return ret;
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}
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