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make getmntent_r discard long lines when it returns error, not seek back

seeking back can be performed by the caller, but if the caller doesn't
expect it, it will result in an infinite loop of failures.
rs-1.0
Rich Felker 15 years ago
parent
commit
ede5ae7b0b
  1. 3
      src/linux/mntent.c

3
src/linux/mntent.c

@ -25,8 +25,7 @@ struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int bufle
fgets(linebuf, buflen, f);
if (feof(f) || ferror(f)) return 0;
if (!strchr(linebuf, '\n')) {
if (fseeko(f, -(off_t)strlen(linebuf), SEEK_CUR))
fscanf(f, "%*[^\n]%*[\n]");
fscanf(f, "%*[^\n]%*[\n]");
errno = ERANGE;
return 0;
}

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