22 lines
439 B
C
22 lines
439 B
C
#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <wasi/libc.h>
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int truncate(const char *path, off_t length)
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{
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int fd = __wasilibc_open_nomode(path, O_WRONLY | O_CLOEXEC | O_NOCTTY);
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if (fd < 0)
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return -1;
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int result = ftruncate(fd, length);
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if (result != 0) {
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int save_errno = errno;
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(void)close(fd);
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errno = save_errno;
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return -1;
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}
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return close(fd);
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}
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