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Use readlink correctly

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This commit is contained in:
Warner Losh 1998-09-09 17:05:54 +00:00
parent f0f066ec83
commit 74542ae78c
1 changed files with 5 additions and 3 deletions
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8
contrib/cvs/src/filesubr.c
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@ -771,6 +771,7 @@ xreadlink (link)
{
char *file = NULL;
int buflen = BUFSIZ;
int linklen;
if (!islink (link))
return NULL;
@ -782,13 +783,14 @@ xreadlink (link)
{
file = xrealloc (file, buflen);
errno = 0;
readlink (link, file, buflen);
linklen = readlink (link, file, buflen - 1);
buflen *= 2;
}
while (errno == ENAMETOOLONG);
while (linklen == -1 && errno == ENAMETOOLONG);
if (errno)
if (linklen == -1)
error (1, errno, "cannot readlink %s", link);
file[linklen] = '\0';
return file;
}