57 lines
933 B
C
57 lines
933 B
C
#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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const int BUFF_SIZE = 4096;
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int main(int argc, char *argv[])
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{
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char *buffer, *ptr;
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int i = 1;
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for (; i < argc; i++)
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{
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int fd = open(argv[i], O_RDONLY);
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int ret, nb_bytes = 1, n;
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if (fd == -1) perror(argv[i]);
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else
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{
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while (nb_bytes > 0)
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{
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buffer = (char *) calloc(BUFF_SIZE, sizeof(char));
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nb_bytes = read(fd, buffer, BUFF_SIZE);
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if (nb_bytes == -1)
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{
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perror(argv[i]);
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break;
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}
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ptr = buffer;
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n = nb_bytes;
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while (n > 0)
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{
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ret = write(STDOUT_FILENO, ptr, n);
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if (ret == -1)
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{
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perror(argv[i]);
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return -1;
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}
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ptr += ret;
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n -= ret;
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}
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free(buffer);
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}
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close(fd);
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}
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}
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return 0;
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}
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