32 строки
716 B
C
32 строки
716 B
C
#include <stdio.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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int main() {
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struct stat s;
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int f = open("/test", O_RDONLY, 0777);
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printf("posix_fadvise: %d\n", posix_fadvise(f, 3, 2, POSIX_FADV_DONTNEED));
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printf("errno: %d\n", errno);
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printf("\n");
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errno = 0;
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printf("posix_fallocate: %d\n", posix_fallocate(f, 3, 2));
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printf("errno: %d\n", errno);
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stat("/test", &s);
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printf("st_size: %d\n", s.st_size);
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memset(&s, 0, sizeof s);
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printf("\n");
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errno = 0;
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printf("posix_fallocate2: %d\n", posix_fallocate(f, 3, 7));
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printf("errno: %d\n", errno);
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stat("/test", &s);
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printf("st_size: %d\n", s.st_size);
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memset(&s, 0, sizeof s);
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return 0;
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}
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