34 lines
620 B
C
34 lines
620 B
C
#include <unistd.h>
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#include <fcntl.h>
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#include <va_list.h>
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#include <errno.h>
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#include <syscall.h>
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#include <syscall_nums.h>
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DEFN_SYSCALL3(open, SYS_OPEN, const char *, int, int);
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int open(const char *name, int flags, ...) {
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va_list argp;
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int mode = 0;
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int result;
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va_start(argp, flags);
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if (flags & O_CREAT) mode = va_arg(argp, int);
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va_end(argp);
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result = syscall_open(name, flags, mode);
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if (result == -1) {
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/* Not sure this is necessary */
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if (flags & O_CREAT) {
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errno = EACCES;
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} else {
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errno = ENOENT;
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}
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} else if (result < 0) {
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errno = -result;
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result = -1;
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}
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return result;
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}
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