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shared, libsystemd-daemon: check for empty strings in strto*l conversions

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strtol() and friends may set EINVAL if no conversion was performed, but
they are not required to do so. In practice they don't. We need to check
for it.

https://bugzilla.redhat.com/show_bug.cgi?id=870577
This commit is contained in:
Michal Schmidt 2012-10-30 10:29:40 +01:00
parent 0eb59ccfe6
commit f3910003bc
3 changed files with 7 additions and 7 deletions
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4
src/libsystemd-daemon/sd-daemon.c
View File

@ -88,7 +88,7 @@ _sd_export_ int sd_listen_fds(int unset_environment) {
goto finish;
}
if (!p || *p || l <= 0) {
if (!p || p == e || *p || l <= 0) {
r = -EINVAL;
goto finish;
}
@ -112,7 +112,7 @@ _sd_export_ int sd_listen_fds(int unset_environment) {
goto finish;
}
if (!p || *p) {
if (!p || p == e || *p) {
r = -EINVAL;
goto finish;
}

2
src/shared/conf-parser.c
View File

@ -865,7 +865,7 @@ int config_parse_mode(
errno = 0;
l = strtol(rvalue, &x, 8);
if (!x || *x || errno) {
if (!x || x == rvalue || *x || errno) {
log_error("[%s:%u] Failed to parse mode value, ignoring: %s", filename, line, rvalue);
return 0;
}

8
src/shared/util.c
View File

@ -377,7 +377,7 @@ int safe_atou(const char *s, unsigned *ret_u) {
errno = 0;
l = strtoul(s, &x, 0);
if (!x || *x || errno)
if (!x || x == s || *x || errno)
return errno ? -errno : -EINVAL;
if ((unsigned long) (unsigned) l != l)
@ -397,7 +397,7 @@ int safe_atoi(const char *s, int *ret_i) {
errno = 0;
l = strtol(s, &x, 0);
if (!x || *x || errno)
if (!x || x == s || *x || errno)
return errno ? -errno : -EINVAL;
if ((long) (int) l != l)
@ -417,7 +417,7 @@ int safe_atollu(const char *s, long long unsigned *ret_llu) {
errno = 0;
l = strtoull(s, &x, 0);
if (!x || *x || errno)
if (!x || x == s || *x || errno)
return errno ? -errno : -EINVAL;
*ret_llu = l;
@ -434,7 +434,7 @@ int safe_atolli(const char *s, long long int *ret_lli) {
errno = 0;
l = strtoll(s, &x, 0);
if (!x || *x || errno)
if (!x || x == s || *x || errno)
return errno ? -errno : -EINVAL;
*ret_lli = l;