63 lines
1.0 KiB
C
63 lines
1.0 KiB
C
#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdlib.h>
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#ifdef __WINDOWS__
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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#include "tai.h"
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#define GLOBAL
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#include "leapsecs.h"
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#ifndef O_BINARY
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#define O_BINARY 0
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#endif
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#ifndef O_NDELAY
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#define O_NDELAY 0
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#endif
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int leapsecs_read(const char *file)
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{ int fd;
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struct stat st;
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struct tai *t;
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int n;
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int i;
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struct tai u;
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fd = open(file, O_RDONLY|O_NDELAY|O_BINARY);
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if (fd == -1) {
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if (errno != ENOENT) return -1;
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if (leapsecs) free(leapsecs);
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leapsecs = 0;
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leapsecs_num = 0;
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return 0;
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}
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if (fstat(fd,&st) == -1) { close(fd); return -1; }
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t = (struct tai *) malloc(st.st_size);
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if (!t) { close(fd); return -1; }
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n = read(fd,(char *) t,st.st_size);
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close(fd);
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if (n != st.st_size) { free(t); return -1; }
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n /= sizeof(struct tai);
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for (i = 0;i < n;++i) {
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tai_unpack((char *) &t[i],&u);
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t[i] = u;
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}
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if (leapsecs) free(leapsecs);
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leapsecs = t;
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leapsecs_num = n;
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return 0;
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}
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