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54 lines
755 B
C
54 lines
755 B
C
#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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slurp(char *filename, char **bufo, off_t *leno)
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{
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int fd;
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struct stat st;
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ssize_t nread = 0;
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ssize_t n;
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int r = 0;
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fd = open(filename, O_RDONLY);
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if (fd < 0) {
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r = errno;
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goto out;
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}
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if (fstat(fd, &st) < 0) {
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r = errno;
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goto out;
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}
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*bufo = malloc(st.st_size + 1);
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if (!*bufo) {
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r = ENOMEM;
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goto out;
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}
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do {
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if ((n = read(fd, *bufo + nread, st.st_size - nread)) < 0) {
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if (errno == EINTR) {
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continue;
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} else {
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r = errno;
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goto out;
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}
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}
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if (!n)
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break;
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nread += n;
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} while (nread < st.st_size);
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*leno = nread;
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(*bufo)[st.st_size] = 0;
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out:
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close(fd);
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return r;
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}
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