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coverity: #1425760

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Use of untrusted scalar value

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2018-06-14 22:05:09 +02:00
parent d3ccc04e79
commit 7635665611
No known key found for this signature in database
GPG Key ID: 8EB056D53EECB12D
1 changed files with 12 additions and 2 deletions
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14
src/lxc/tools/lxc_ls.c
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@ -1136,17 +1136,27 @@ static int ls_serialize(int wpipefd, struct ls *n)
static int ls_recv_str(int fd, char **buf)
{
ssize_t ret;
size_t slen = 0;
if (lxc_read_nointr(fd, &slen, sizeof(slen)) != sizeof(slen))
ret = lxc_read_nointr(fd, &slen, sizeof(slen));
if (ret != sizeof(slen))
return -1;
if (slen > 0) {
*buf = malloc(sizeof(char) * (slen + 1));
if (!*buf)
return -1;
if (lxc_read_nointr(fd, *buf, slen) != (ssize_t)slen)
ret = lxc_read_nointr(fd, *buf, slen);
if (ret != (ssize_t)slen) {
free(*buf);
return -1;
}
(*buf)[slen] = '\0';
}
return 0;
}