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virSecurityDACSetOwnershipInternal: Don't overwrite @path argument 

As shown in the previous commit, @path can be NULL. However, in
that case @src->path is also NULL. Therefore, trying to "fix"
@path to be not NULL is not going to succeed. The real value of
NULLSTR() is in providing a non-NULL string for error reporting.
Well, that can be done in the error reporting without overwriting
argument.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Michal Privoznik 2021-06-04 10:03:47 +02:00
parent 5cfb3369b1
commit b332c2cf89
1 changed files with 4 additions and 6 deletions
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10
src/security/security_dac.c
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@ -679,8 +679,6 @@ virSecurityDACSetOwnershipInternal(const virSecurityDACData *priv,
if (src && priv->chownCallback) {
rc = priv->chownCallback(src, uid, gid);
/* here path is used only for error messages */
path = NULLSTR(src->path);
/* on -2 returned an error was already reported */
if (rc == -2)
@ -712,20 +710,20 @@ virSecurityDACSetOwnershipInternal(const virSecurityDACData *priv,
if (errno == EOPNOTSUPP || errno == EINVAL) {
VIR_INFO("Setting user and group to '%ld:%ld' on '%s' not "
"supported by filesystem",
(long)uid, (long)gid, path);
(long)uid, (long)gid, NULLSTR(path));
} else if (errno == EPERM) {
VIR_INFO("Setting user and group to '%ld:%ld' on '%s' not "
"permitted",
(long)uid, (long)gid, path);
(long)uid, (long)gid, NULLSTR(path));
} else if (errno == EROFS) {
VIR_INFO("Setting user and group to '%ld:%ld' on '%s' not "
"possible on readonly filesystem",
(long)uid, (long)gid, path);
(long)uid, (long)gid, NULLSTR(path));
} else {
virReportSystemError(errno,
_("unable to set user and group to '%ld:%ld' "
"on '%s'"),
(long)uid, (long)gid, path);
(long)uid, (long)gid, NULLSTR(path));
return -1;
}
}