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24 lines
531 B
C
24 lines
531 B
C
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#include <sys/eventfd.h>
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#include <unistd.h>
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#include <errno.h>
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#include "syscall.h"
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int eventfd(unsigned int count, int flags)
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{
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int r = __syscall(SYS_eventfd2, count, flags);
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#ifdef SYS_eventfd
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if (r==-ENOSYS && !flags) r = __syscall(SYS_eventfd, count);
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#endif
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return __syscall_ret(r);
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}
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int eventfd_read(int fd, eventfd_t *value)
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{
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return (sizeof(*value) == read(fd, value, sizeof(*value))) ? 0 : -1;
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}
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int eventfd_write(int fd, eventfd_t value)
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{
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return (sizeof(value) == write(fd, &value, sizeof(value))) ? 0 : -1;
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}
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