31 lines
521 B
C
31 lines
521 B
C
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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int getFL(int fd) { return fcntl(fd, F_GETFL, 0); }
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int main(void) {
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int fd = open("./test/fileat", O_RDWR);
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printf("FL: %d\n", getFL(fd));
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if (fcntl(fd, F_SETFL, getFL(fd) | O_APPEND) < 0) {
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printf("fcntl F_SETFL error\n");
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return -1;
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}
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printf("FL: %d\n", getFL(fd));
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char buff[] = "Nope";
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int wbit = write(fd, buff, sizeof(buff));
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if (wbit < 0) {
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printf("write buff error\n");
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return -1;
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}
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close(fd);
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return 0;
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}
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