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FTBFS: fix gcc 10.2 truncation and overflow errors

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rebase to 1.0.33+ from new upstream location
This commit is contained in:
Chris Leech 2020-09-18 19:50:37 -07:00
parent eb7fd0b199
commit 178354d795
5 changed files with 508 additions and 498 deletions
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444
0001-21-string-op-truncation-format-truncation-and-format.patch Normal file
View File

@ -0,0 +1,444 @@
From 329d7721a40e94547186bf680ba5ae033dda3006 Mon Sep 17 00:00:00 2001
From: Chris Leech <cleech@redhat.com>
Date: Fri, 18 Sep 2020 10:20:57 -0700
Subject: [PATCH 1/1] 21 string-op truncation, format truncation, and format
overflow errors
This isn't a full audit of the source, just addressing anything gcc 10.2 flagged.
There's two basic mitigations added, depending on the likelyhood and severity
of truncation to correct functioning.
1) When a truncation is unlikely (copy between two IFNAMSIZ buffers) or
non-critical (output formating) I forced a null-terminiation at the buffer end
after a strncpy to satisfy the compiler.
2) Where truncation needs proper detection and handling, I used snprintf and
corrected the error checking.
Signed-off-by: Chris Leech <cleech@redhat.com>
---
fcoeadm.c | 8 +++---
fcoeadm_display.c | 62 ++++++++++++++++++++++++++++++++++-------------
fcoemon.c | 44 ++++++++++++++++++++++++++-------
fipvlan.c | 5 +++-
lib/fcoe_utils.c | 17 ++++++-------
lib/sysfs_hba.c | 6 +++++
libopenfcoe.c | 4 ++-
7 files changed, 106 insertions(+), 40 deletions(-)
diff --git a/fcoeadm.c b/fcoeadm.c
index 776b4e32b2e..8b9112d63c3 100644
--- a/fcoeadm.c
+++ b/fcoeadm.c
@@ -185,9 +185,10 @@ fcoeadm_action(enum clif_action cmd, char *ifname, enum clif_flags flags)
struct clif_sock_info clif_info;
int rc;
- if (ifname)
- strncpy(data.ifname, ifname, sizeof(data.ifname));
- else
+ if (ifname) {
+ strncpy(data.ifname, ifname, IFNAMSIZ);
+ data.ifname[IFNAMSIZ - 1] = '\0';
+ } else
data.ifname[0] = '\0';
data.cmd = cmd;
data.flags = flags;
@@ -232,6 +233,7 @@ int main(int argc, char *argv[])
* expects progname to be valid.
*/
strncpy(progname, basename(argv[0]), sizeof(progname));
+ progname[sizeof(progname) - 1] = '\0';
/* check if we have sysfs */
if (fcoe_checkdir(SYSFS_MOUNT)) {
diff --git a/fcoeadm_display.c b/fcoeadm_display.c
index 7d29422e91f..4b1d358d1c8 100644
--- a/fcoeadm_display.c
+++ b/fcoeadm_display.c
@@ -188,6 +188,7 @@ static void sa_dir_crawl(char *dir_name,
struct dirent *dp;
void (*f)(char *dirname, enum disp_style style);
char path[1024];
+ int rc;
f = func;
@@ -199,8 +200,9 @@ static void sa_dir_crawl(char *dir_name,
if (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' ||
(dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
continue;
- snprintf(path, sizeof(path), "%s/%s", dir_name, dp->d_name);
-
+ rc = snprintf(path, sizeof(path), "%s/%s", dir_name, dp->d_name);
+ if (rc < 0 || (size_t) rc >= sizeof(path))
+ continue;
f(path, style);
}
closedir(dir);
@@ -254,10 +256,13 @@ static void show_full_lun_info(unsigned int hba, unsigned int port,
struct dirent *dp;
struct port_attributes *rport_attrs;
struct port_attributes *port_attrs;
+ int rc;
- snprintf(path, sizeof(path),
- "/sys/class/scsi_device/%u:%u:%u:%u",
- hba, port, tgt, lun);
+ rc = snprintf(path, sizeof(path),
+ "/sys/class/scsi_device/%u:%u:%u:%u",
+ hba, port, tgt, lun);
+ if (rc < 0 || (size_t) rc >= sizeof(path))
+ return;
rport_attrs = get_rport_attribs_by_device(path);
if (!rport_attrs)
@@ -287,10 +292,14 @@ static void show_full_lun_info(unsigned int hba, unsigned int port,
osname = dp->d_name;
- snprintf(npath, sizeof(npath), "%s/%s/", path, osname);
+ rc = snprintf(npath, sizeof(npath), "%s/%s/", path, osname);
+ if (rc < 0 || (size_t) rc >= sizeof(npath))
+ continue;
sa_sys_read_u64(npath, "size", &lba);
- snprintf(npath, sizeof(npath), "%s/%s/queue/", path, osname);
+ rc = snprintf(npath, sizeof(npath), "%s/%s/queue/", path, osname);
+ if (rc < 0 || (size_t) rc >= sizeof(npath))
+ continue;
sa_sys_read_u32(npath, "hw_sector_size", &blksize);
}
@@ -340,10 +349,13 @@ static void show_short_lun_info(unsigned int hba, unsigned int port,
char *capstr = "Unknown";
char *osname = "Unknown";
uint64_t size;
+ int rc;
- snprintf(path, sizeof(path),
- "/sys/class/scsi_device/%u:%u:%u:%u/device/",
- hba, port, tgt, lun);
+ rc = snprintf(path, sizeof(path),
+ "/sys/class/scsi_device/%u:%u:%u:%u/device/",
+ hba, port, tgt, lun);
+ if (rc < 0 || (size_t) rc >= sizeof(path))
+ return;
sa_sys_read_line(path, "rev", rev, sizeof(rev));
sa_sys_read_line(path, "model", model, sizeof(model));
@@ -363,10 +375,14 @@ static void show_short_lun_info(unsigned int hba, unsigned int port,
osname = dp->d_name;
- snprintf(npath, sizeof(npath), "%s/%s/", path, osname);
+ rc = snprintf(npath, sizeof(npath), "%s/%s/", path, osname);
+ if (rc < 0 || (size_t) rc >= sizeof(npath))
+ continue;
sa_sys_read_u64(npath, "size", &size);
- snprintf(npath, sizeof(npath), "%s/%s/queue/", path, osname);
+ rc = snprintf(npath, sizeof(npath), "%s/%s/queue/", path, osname);
+ if (rc < 0 || (size_t) rc >= sizeof(npath))
+ continue;
sa_sys_read_u32(npath, "hw_sector_size", &blksize);
}
@@ -419,8 +435,11 @@ static void list_luns_by_rport(char *rport, enum disp_style style)
char *substr;
int len;
int ret;
+ int rc;
- snprintf(path, sizeof(path), "/sys/class/fc_remote_ports/%s", rport);
+ rc = snprintf(path, sizeof(path), "/sys/class/fc_remote_ports/%s", rport);
+ if (rc < 0 || (size_t) rc >= sizeof(path))
+ return;
ret = readlink(path, link, sizeof(link));
if (ret == -1)
@@ -430,7 +449,9 @@ static void list_luns_by_rport(char *rport, enum disp_style style)
link[ret] = '\0';
substr = strstr(link, "net");
- snprintf(path, sizeof(path), "/sys/class/%s", substr);
+ rc = snprintf(path, sizeof(path), "/sys/class/%s", substr);
+ if (rc < 0 || (size_t) rc >= sizeof(path))
+ return;
substr = strstr(path, "fc_remote_ports");
@@ -560,11 +581,16 @@ static int get_host_from_vport(struct dirent *dp,
static int crawl_vports(struct dirent *dp, void *arg)
{
char *oldpath = arg;
+ int rc;
if (!strncmp(dp->d_name, "vport", strlen("vport"))) {
char path[1024];
- snprintf(path, sizeof(path), "%s/%s", oldpath, dp->d_name);
+ rc = snprintf(path, sizeof(path), "%s/%s", oldpath, dp->d_name);
+ if (rc < 0 || (size_t) rc >= sizeof(path)) {
+ // ignore error and continue
+ return 0;
+ }
sa_dir_read(path, get_host_from_vport, NULL);
}
return 0;
@@ -573,10 +599,12 @@ static int crawl_vports(struct dirent *dp, void *arg)
static void show_host_vports(const char *host)
{
char path[1024];
+ int rc;
- snprintf(path, sizeof(path), "%s/%s/device/", SYSFS_HOST_DIR, host);
+ rc = snprintf(path, sizeof(path), "%s/%s/device/", SYSFS_HOST_DIR, host);
+ if (rc < 0 || (size_t) rc >= sizeof(path))
+ return;
sa_dir_read(path, crawl_vports, path);
-
}
static enum fcoe_status display_one_adapter_info(char *ifname)
diff --git a/fcoemon.c b/fcoemon.c
index 60dbc1e444d..8c08bc5a032 100644
--- a/fcoemon.c
+++ b/fcoemon.c
@@ -518,6 +518,7 @@ static int fcm_read_config_files(void)
}
strncpy(file, CONFIG_DIR "/", sizeof(file));
strncat(file, dp->d_name, sizeof(file) - strlen(file));
+ file[sizeof(file) - 1] = '\0';
fp = fopen(file, "r");
if (!fp) {
FCM_LOG_ERR(errno, "Failed to read %s\n", file);
@@ -939,6 +940,7 @@ static struct fcoe_port *fcm_new_vlan(int ifindex, int vid, bool vn2vn)
[false] = CLIF_FLAGS_FABRIC,
[true] = CLIF_FLAGS_VN2VN,
};
+ int rc;
if (vn2vn)
FCM_LOG_DBG("Auto VLAN found vn2vn on VID %d\n", vid);
@@ -947,8 +949,15 @@ static struct fcoe_port *fcm_new_vlan(int ifindex, int vid, bool vn2vn)
if (rtnl_find_vlan(ifindex, vid, vlan_name)) {
rtnl_get_linkname(ifindex, real_name);
- snprintf(vlan_name, sizeof(vlan_name), FCOE_VLAN_FORMAT,
- real_name, vid);
+ rc = snprintf(vlan_name, sizeof(vlan_name), FCOE_VLAN_FORMAT,
+ real_name, vid);
+ if (rc < 0 || (size_t) rc >= sizeof(vlan_name)) {
+ FCM_LOG("Warning: Generating FCoE VLAN device name for"
+ "interface %s VLAN %d: format resulted in a"
+ "name larger than IFNAMSIZ\n", real_name, vid);
+ vlan_name[sizeof(vlan_name) - 1] = 0;
+ FCM_LOG("\tTruncating VLAN name to %s\n", vlan_name);
+ }
vlan_create(ifindex, vid, vlan_name);
}
rtnl_set_iff_up(0, vlan_name);
@@ -1077,6 +1086,7 @@ static void fcm_vlan_dev_real_dev(char *vlan_ifname, char *real_ifname)
{
int fd;
struct vlan_ioctl_args ifv;
+ int rc;
real_ifname[0] = '\0';
@@ -1093,9 +1103,18 @@ static void fcm_vlan_dev_real_dev(char *vlan_ifname, char *real_ifname)
FCM_LOG_ERR(ENOSPC, "no room for vlan ifname");
goto close_fd;
}
- strncpy(ifv.device1, vlan_ifname, sizeof(ifv.device1));
- if (ioctl(fd, SIOCGIFVLAN, &ifv) == 0)
- strncpy(real_ifname, ifv.u.device2, IFNAMSIZ-1);
+
+ rc = snprintf(ifv.device1, IFNAMSIZ, "%s", vlan_ifname);
+ if (rc < 0 || rc >= IFNAMSIZ)
+ goto close_fd;
+
+ if (ioctl(fd, SIOCGIFVLAN, &ifv) == 0) {
+ rc = snprintf(real_ifname, IFNAMSIZ, "%s", ifv.u.device2);
+ if (rc < 0 || rc >= IFNAMSIZ) {
+ real_ifname[0] = '\0';
+ goto close_fd;
+ }
+ }
close_fd:
close(fd);
}
@@ -1647,8 +1666,10 @@ static void fcm_process_link_msg(struct ifinfomsg *ip, int len, unsigned type)
/* try to find the real device name */
real_dev[0] = '\0';
fcm_vlan_dev_real_dev(ifname, real_dev);
- if (strlen(real_dev))
- strncpy(p->real_ifname, real_dev, IFNAMSIZ-1);
+ if (strlen(real_dev)) {
+ strncpy(p->real_ifname, real_dev, IFNAMSIZ);
+ p->real_ifname[IFNAMSIZ - 1] = '\0';
+ }
if (p->ready)
update_fcoe_port_state(p, type, operstate,
FCP_CFG_IFNAME);
@@ -1660,7 +1681,8 @@ static void fcm_process_link_msg(struct ifinfomsg *ip, int len, unsigned type)
if (p) {
p->ifindex = ifindex;
memcpy(p->mac, mac, ETHER_ADDR_LEN);
- strncpy(p->real_ifname, ifname, IFNAMSIZ-1);
+ strncpy(p->real_ifname, ifname, IFNAMSIZ);
+ p->real_ifname[IFNAMSIZ - 1] = '\0';
update_fcoe_port_state(p, type, operstate,
FCP_REAL_IFNAME);
}
@@ -1788,7 +1810,9 @@ static void fcm_process_ieee_msg(struct nlmsghdr *nlh)
if (rta_parent->rta_type != DCB_ATTR_IFNAME)
return;
- strncpy(ifname, NLA_DATA(rta_parent), sizeof(ifname));
+ strncpy(ifname, NLA_DATA(rta_parent), IFNAMSIZ);
+ ifname[IFNAMSIZ - 1] = '\0';
+
ff = fcm_netif_lookup_create(ifname);
if (!ff) {
FCM_LOG("Processing IEEE message: %s not found or created\n",
@@ -3699,6 +3723,8 @@ int main(int argc, char **argv)
memset(&fcoe_config, 0, sizeof(fcoe_config));
strncpy(progname, basename(argv[0]), sizeof(progname));
+ progname[sizeof(progname) - 1] = '\0';
+
sa_log_prefix = progname;
sa_log_flags = 0;
openlog(sa_log_prefix, LOG_CONS, LOG_DAEMON);
diff --git a/fipvlan.c b/fipvlan.c
index 2e9a8f2b047..c8a07339314 100644
--- a/fipvlan.c
+++ b/fipvlan.c
@@ -449,6 +449,7 @@ static void rtnl_recv_newlink(struct nlmsghdr *nh)
iff->iflink = iff->ifindex;
memcpy(iff->mac_addr, RTA_DATA(ifla[IFLA_ADDRESS]), ETHER_ADDR_LEN);
strncpy(iff->ifname, RTA_DATA(ifla[IFLA_IFNAME]), IFNAMSIZ);
+ iff->ifname[IFNAMSIZ - 1] = '\0';
if (ifla[IFLA_LINKINFO]) {
parse_linkinfo(linkinfo, ifla[IFLA_LINKINFO]);
@@ -541,8 +542,10 @@ static void parse_cmdline(int argc, char **argv)
config.start = true;
break;
case 'f':
- if (optarg && strlen(optarg))
+ if (optarg && strlen(optarg)) {
strncpy(config.suffix, optarg, 256);
+ config.suffix[256 - 1] = '\0';
+ }
break;
case 'l':
config.link_retry = strtoul(optarg, NULL, 10);
diff --git a/lib/fcoe_utils.c b/lib/fcoe_utils.c
index 516eac5247d..4d13dd7ecf9 100644
--- a/lib/fcoe_utils.c
+++ b/lib/fcoe_utils.c
@@ -68,9 +68,10 @@ static int fcoe_check_fchost(const char *ifname, const char *dname)
enum fcoe_status fcoe_find_fchost(const char *ifname, char *fchost, int len)
{
- int n, dname_len, status;
+ int n, status;
struct dirent **namelist;
int rc = ENOFCOECONN;
+ int rrc;
status = n = scandir(SYSFS_FCHOST, &namelist, 0, alphasort);
@@ -78,19 +79,17 @@ enum fcoe_status fcoe_find_fchost(const char *ifname, char *fchost, int len)
if (rc) {
/* check symbolic name */
if (!fcoe_check_fchost(ifname, namelist[n]->d_name)) {
- dname_len = strnlen(namelist[n]->d_name, len);
-
- if (len > dname_len) {
- strncpy(fchost, namelist[n]->d_name,
- dname_len + 1);
- /* rc = 0 indicates found */
- rc = SUCCESS;
- } else {
+ rrc = snprintf(fchost, len, "%s", namelist[n]->d_name);
+ if (rrc < 0 || rrc >= len) {
+ fchost[0] = '\0';
/*
* The fc_host is too large
* for the buffer.
*/
rc = EINTERR;
+ } else {
+ /* rc = 0 indicates found */
+ rc = SUCCESS;
}
}
}
diff --git a/lib/sysfs_hba.c b/lib/sysfs_hba.c
index ce781e2e0ed..a8d557e92b5 100644
--- a/lib/sysfs_hba.c
+++ b/lib/sysfs_hba.c
@@ -215,6 +215,7 @@ static void get_pci_device_info(struct pci_device *dev, struct hba_info *info)
vname = unknown;
strncpy(info->manufacturer, vname, sizeof(info->manufacturer));
+ info->manufacturer[sizeof(info->manufacturer) - 1] = '\0';
dname = pci_device_get_device_name(dev);
if (!dname)
@@ -222,6 +223,7 @@ static void get_pci_device_info(struct pci_device *dev, struct hba_info *info)
strncpy(info->model_description, dname,
sizeof(info->model_description));
+ info->model_description[sizeof(info->model_description) - 1] = '\0';
pci_device_cfg_read_u8(dev, &revision, PCI_REVISION_ID);
snprintf(info->hardware_version, sizeof(info->hardware_version),
@@ -259,6 +261,7 @@ static void get_module_info(const char *pcidev, struct hba_info *info)
strncpy(info->driver_name,
strstr(buf, "module") + strlen("module") + 1,
sizeof(info->driver_name));
+ info->driver_name[sizeof(info->driver_name) - 1] = '\0';
}
@@ -316,6 +319,8 @@ struct port_attributes *get_rport_attribs(const char *rport)
goto free_path;
strncpy(pa->device_name, rport, sizeof(pa->device_name));
+ pa->device_name[sizeof(pa->device_name) - 1] = '\0';
+
sa_sys_read_line(path, "node_name", pa->node_name,
sizeof(pa->node_name));
sa_sys_read_line(path, "port_name", pa->port_name,
@@ -391,6 +396,7 @@ struct port_attributes *get_port_attribs(const char *host)
goto free_path;
strncpy(pa->device_name, host, sizeof(pa->device_name));
+ pa->device_name[sizeof(pa->device_name) - 1] = '\0';
sa_sys_read_line(path, "symbolic_name", pa->symbolic_name,
sizeof(pa->symbolic_name));
diff --git a/libopenfcoe.c b/libopenfcoe.c
index c3fd1b031f8..452ee803e63 100644
--- a/libopenfcoe.c
+++ b/libopenfcoe.c
@@ -207,7 +207,9 @@ static int read_fcoe_ctlr_device(struct dirent *dp, void *arg)
if (!rc)
goto fail;
- sprintf(hpath, "%s/%s/", SYSFS_FCHOST, fchost);
+ rc = snprintf(hpath, MAX_STR_LEN, "%s/%s/", SYSFS_FCHOST, fchost);
+ if (rc < 0 || rc >= MAX_STR_LEN)
+ goto fail;
rc = sa_sys_read_line(hpath, "symbolic_name", buf, sizeof(buf));
--
2.18.1

490
0001-string-warning-fixes.patch
View File

@ -1,490 +0,0 @@
From 1bc240f074767a2c23efaf413d6ce96fdedcda2e Mon Sep 17 00:00:00 2001
From: Chris Leech <cleech@redhat.com>
Date: Mon, 3 Jun 2019 18:37:59 -0700
Subject: [PATCH 1/1] use libbsd strlcpy
gcc7 fmt truncation errors
fix build warnings/errors with GCC format-truncation checks
more libbsd
---
Makefile.am | 17 ++++++++++-------
configure.ac | 2 ++
fcoeadm.c | 4 ++--
fcoeadm_display.c | 32 +++++++++++++++++++++++++-------
fcoemon.c | 37 +++++++++++++++++++++++--------------
fipvlan.c | 10 ++++++----
lib/rtnetlink.c | 2 +-
lib/sysfs_hba.c | 16 ++++++++--------
libopenfcoe.c | 19 +++++++++++++------
9 files changed, 90 insertions(+), 49 deletions(-)
diff --git a/Makefile.am b/Makefile.am
index ba302e09d94..b8bc810af19 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,29 +9,32 @@ AM_CFLAGS = -Wall -Wformat=2 -Werror -Wmissing-prototypes -Wstrict-prototypes
## rules for building fcoeadm
fcoeadm_SOURCES = fcoeadm.c fcoeadm_display.c
-fcoeadm_LDADD = lib/libutil.a libopenfcoe.a $(PCIACCESS_LIBS)
-fcoeadm_CFLAGS = $(AM_CFLAGS)
+fcoeadm_LDADD = lib/libutil.a libopenfcoe.a $(PCIACCESS_LIBS) $(LIBBSD_LIBS)
+fcoeadm_CFLAGS = $(AM_CFLAGS) $(LIBBSD_CFLAGS)
## rules for building fcoemon
fcoemon_SOURCES = fcoemon.c
-fcoemon_LDADD = lib/libutil.a -lrt
-fcoemon_CFLAGS = $(AM_CFLAGS) $(DCBD_CFLAGS)
+fcoemon_LDADD = lib/libutil.a -lrt $(LIBBSD_LIBS)
+fcoemon_CFLAGS = $(AM_CFLAGS) $(DCBD_CFLAGS) $(LIBBSD_CFLAGS)
## rules for building fcping
fcping_SOURCES = fcping.c
-fcping_LDADD = lib/libutil.a libopenfcoe.a $(PCIACCESS_LIBS) -lrt
-fcping_CFLAGS = $(AM_CFLAGS)
+fcping_LDADD = lib/libutil.a libopenfcoe.a $(PCIACCESS_LIBS) -lrt $(LIBBSD_LIBS)
+fcping_CFLAGS = $(AM_CFLAGS) $(LIBBSD_CFLAGS)
## rules for building fipvlan
fipvlan_SOURCES = fipvlan.c
-fipvlan_LDADD = lib/libutil.a
+fipvlan_LDADD = lib/libutil.a $(LIBBSD_LIBS)
+fipvlan_CFLAGS = $(AM_CFLAGS) $(LIBBSD_CFLAGS)
AUTOMAKE_OPTIONS=subdir-objects
noinst_LIBRARIES = lib/libutil.a libopenfcoe.a
lib_libutil_a_SOURCES = lib/fcoe_utils.c lib/sa_log.c lib/sa_select.c \
lib/sa_timer.c lib/sa_other.c lib/fip.c lib/rtnetlink.c lib/sa_sys.c \
lib/sysfs_hba.c
+lib_libutil_a_CFLAGS = $(AM_CFLAGS) $(LIBBSD_CFLAGS)
libopenfcoe_a_SOURCES = libopenfcoe.c
+libopenfcoe_a_CFLAGS = $(AM_CFLAGS) $(LIBBSD_CFLAGS)
## header files that need to be distributed
noinst_HEADERS = fcoeadm_display.h fcoe_clif.h fcoemon.h \
diff --git a/configure.ac b/configure.ac
index 6bc073b221c..f1612e490cb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,6 +13,8 @@ AC_SUBST([LLDPAD_CFLAGS])
PKG_CHECK_MODULES([PCIACCESS], [pciaccess])
AC_SUBST([PCIACCESS_LIBS])
+PKG_CHECK_MODULES([LIBBSD], [libbsd-overlay])
+
PKG_PROG_PKG_CONFIG
AC_ARG_WITH([systemdsystemunitdir],
AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
diff --git a/fcoeadm.c b/fcoeadm.c
index 776b4e32b2e..6e143596129 100644
--- a/fcoeadm.c
+++ b/fcoeadm.c
@@ -186,7 +186,7 @@ fcoeadm_action(enum clif_action cmd, char *ifname, enum clif_flags flags)
int rc;
if (ifname)
- strncpy(data.ifname, ifname, sizeof(data.ifname));
+ strlcpy(data.ifname, ifname, sizeof(data.ifname));
else
data.ifname[0] = '\0';
data.cmd = cmd;
@@ -231,7 +231,7 @@ int main(int argc, char *argv[])
* This has to be first because the error print macro
* expects progname to be valid.
*/
- strncpy(progname, basename(argv[0]), sizeof(progname));
+ strlcpy(progname, basename(argv[0]), sizeof(progname));
/* check if we have sysfs */
if (fcoe_checkdir(SYSFS_MOUNT)) {
diff --git a/fcoeadm_display.c b/fcoeadm_display.c
index 120c6084b7c..2c6214db29a 100644
--- a/fcoeadm_display.c
+++ b/fcoeadm_display.c
@@ -254,6 +254,7 @@ static void show_full_lun_info(unsigned int hba, unsigned int port,
struct dirent *dp;
struct port_attributes *rport_attrs;
struct port_attributes *port_attrs;
+ int rc;
snprintf(path, sizeof(path),
"/sys/class/scsi_device/%u:%u:%u:%u",
@@ -267,13 +268,13 @@ static void show_full_lun_info(unsigned int hba, unsigned int port,
if (!port_attrs)
goto free_rport;
- strncat(path, "/device/", sizeof(path) - strlen(path) - 1);
+ strlcat(path, "/device/", sizeof(path));
sa_sys_read_line(path, "rev", rev, sizeof(rev));
sa_sys_read_line(path, "model", model, sizeof(model));
sa_sys_read_line(path, "vendor", vendor, sizeof(vendor));
- strncat(path, "block", sizeof(path) - strlen(path) - 1);
+ strlcat(path, "block", sizeof(path));
dir = opendir(path);
if (!dir)
@@ -287,10 +288,18 @@ static void show_full_lun_info(unsigned int hba, unsigned int port,
osname = dp->d_name;
- snprintf(npath, sizeof(npath), "%s/%s/", path, osname);
+ rc = snprintf(npath, sizeof(npath), "%s/%s/", path, osname);
+ if (rc < 0 || rc >= sizeof(npath)) {
+ /* error or truncation, bailing out */
+ return;
+ }
sa_sys_read_u64(npath, "size", &lba);
- snprintf(npath, sizeof(npath), "%s/%s/queue/", path, osname);
+ rc = snprintf(npath, sizeof(npath), "%s/%s/queue/", path, osname);
+ if (rc < 0 || rc >= sizeof(npath)) {
+ /* error or truncation, bailing out */
+ return;
+ }
sa_sys_read_u32(npath, "hw_sector_size", &blksize);
}
@@ -340,6 +349,7 @@ static void show_short_lun_info(unsigned int hba, unsigned int port,
char *capstr = "Unknown";
char *osname = "Unknown";
uint64_t size;
+ int rc;
snprintf(path, sizeof(path),
"/sys/class/scsi_device/%u:%u:%u:%u/device/",
@@ -349,7 +359,7 @@ static void show_short_lun_info(unsigned int hba, unsigned int port,
sa_sys_read_line(path, "model", model, sizeof(model));
sa_sys_read_line(path, "vendor", vendor, sizeof(vendor));
- strncat(path, "block", sizeof(path) - strlen(path) - 1);
+ strlcat(path, "block", sizeof(path));
dir = opendir(path);
if (!dir)
@@ -363,10 +373,18 @@ static void show_short_lun_info(unsigned int hba, unsigned int port,
osname = dp->d_name;
- snprintf(npath, sizeof(npath), "%s/%s/", path, osname);
+ rc = snprintf(npath, sizeof(npath), "%s/%s/", path, osname);
+ if (rc < 0 || rc >= sizeof(npath)) {
+ /* error or truncation, bailing out */
+ return;
+ }
sa_sys_read_u64(npath, "size", &size);
- snprintf(npath, sizeof(npath), "%s/%s/queue/", path, osname);
+ rc = snprintf(npath, sizeof(npath), "%s/%s/queue/", path, osname);
+ if (rc < 0 || rc >= sizeof(npath)) {
+ /* error or truncation, bailing out */
+ return;
+ }
sa_sys_read_u32(npath, "hw_sector_size", &blksize);
}
diff --git a/fcoemon.c b/fcoemon.c
index 9af0f1284af..10f978b19ec 100644
--- a/fcoemon.c
+++ b/fcoemon.c
@@ -378,8 +378,8 @@ static int fcm_remove_quotes(char *buf, int len)
return -1;
s = buf + 1;
*e = '\0';
- strncpy(tmp, s, len - 1);
- strncpy(buf, tmp, len - 1);
+ strlcpy(tmp, s, len);
+ strlcpy(buf, tmp, len);
return 0;
}
@@ -516,8 +516,8 @@ static int fcm_read_config_files(void)
dp->d_name);
continue;
}
- strncpy(file, CONFIG_DIR "/", sizeof(file));
- strncat(file, dp->d_name, sizeof(file) - strlen(file));
+ strlcpy(file, CONFIG_DIR "/", sizeof(file));
+ strlcat(file, dp->d_name, sizeof(file));
fp = fopen(file, "r");
if (!fp) {
FCM_LOG_ERR(errno, "Failed to read %s\n", file);
@@ -937,6 +937,7 @@ static struct fcoe_port *fcm_new_vlan(int ifindex, int vid, bool vn2vn)
[false] = CLIF_FLAGS_FABRIC,
[true] = CLIF_FLAGS_VN2VN,
};
+ int rc;
if (vn2vn)
FCM_LOG_DBG("Auto VLAN found vn2vn on VID %d\n", vid);
@@ -945,8 +946,15 @@ static struct fcoe_port *fcm_new_vlan(int ifindex, int vid, bool vn2vn)
if (rtnl_find_vlan(ifindex, vid, vlan_name)) {
rtnl_get_linkname(ifindex, real_name);
- snprintf(vlan_name, sizeof(vlan_name), FCOE_VLAN_FORMAT,
- real_name, vid);
+ rc = snprintf(vlan_name, sizeof(vlan_name), FCOE_VLAN_FORMAT,
+ real_name, vid);
+ if (rc >= sizeof(vlan_name)) {
+ FCM_LOG("Warning: Generating FCoE VLAN device name for"
+ "interface %s VLAN %d: format resulted in a"
+ "name larger than IFNAMSIZ\n", real_name, vid);
+ vlan_name[sizeof(vlan_name) - 1] = 0;
+ FCM_LOG("\tTruncating VLAN name to %s\n", vlan_name);
+ }
vlan_create(ifindex, vid, vlan_name);
}
rtnl_set_iff_up(0, vlan_name);
@@ -1087,9 +1095,10 @@ static void fcm_vlan_dev_real_dev(char *vlan_ifname, char *real_ifname)
memset(&ifv, 0, sizeof(ifv));
ifv.cmd = GET_VLAN_REALDEV_NAME_CMD;
- strncpy(ifv.device1, vlan_ifname, strlen(vlan_ifname)+1);
+ strlcpy(ifv.device1, vlan_ifname, sizeof(ifv.device1));
+
if (ioctl(fd, SIOCGIFVLAN, &ifv) == 0)
- strncpy(real_ifname, ifv.u.device2, strlen(ifv.u.device2)+1);
+ strlcpy(real_ifname, ifv.u.device2, IFNAMSIZ);
close(fd);
}
@@ -1318,7 +1327,7 @@ static void ieee_get_req(struct fcm_netif *ff)
msg.dcbmsg.dcb_pad = 0;
msg.rta.rta_len = NLMSG_ALIGN(NLA_HDRLEN + iflen + 1);
msg.rta.rta_type = DCB_ATTR_IFNAME;
- strncpy(msg.ifname, ff->ifname, iflen);
+ strlcpy(msg.ifname, ff->ifname, IFNAMSIZ);
ff->ieee_resp_pending = seq;
rc = write(fcm_link_socket, &msg, msg.nl.nlmsg_len);
if (rc < 0) {
@@ -1641,7 +1650,7 @@ static void fcm_process_link_msg(struct ifinfomsg *ip, int len, unsigned type)
real_dev[0] = '\0';
fcm_vlan_dev_real_dev(ifname, real_dev);
if (strlen(real_dev))
- strncpy(p->real_ifname, real_dev, strlen(real_dev)+1);
+ strlcpy(p->real_ifname, real_dev, IFNAMSIZ);
if (p->ready)
update_fcoe_port_state(p, type, operstate,
FCP_CFG_IFNAME);
@@ -1653,7 +1662,7 @@ static void fcm_process_link_msg(struct ifinfomsg *ip, int len, unsigned type)
if (p) {
p->ifindex = ifindex;
memcpy(p->mac, mac, ETHER_ADDR_LEN);
- strncpy(p->real_ifname, ifname, strlen(ifname)+1);
+ strlcpy(p->real_ifname, ifname, IFNAMSIZ);
update_fcoe_port_state(p, type, operstate,
FCP_REAL_IFNAME);
}
@@ -1781,7 +1790,7 @@ static void fcm_process_ieee_msg(struct nlmsghdr *nlh)
if (rta_parent->rta_type != DCB_ATTR_IFNAME)
return;
- strncpy(ifname, NLA_DATA(rta_parent), sizeof(ifname));
+ strlcpy(ifname, NLA_DATA(rta_parent), IFNAMSIZ);
ff = fcm_netif_lookup_create(ifname);
if (!ff) {
FCM_LOG("Processing IEEE message: %s not found or created\n",
@@ -3531,7 +3540,7 @@ static void fcm_srv_receive(void *arg)
}
cmd = data->cmd;
- strncpy(ifname, data->ifname, sizeof(data->ifname));
+ strlcpy(ifname, data->ifname, IFNAMSIZ);
ifname[sizeof(data->ifname)] = 0;
if (cmd != CLIF_PID_CMD) {
@@ -3686,7 +3695,7 @@ int main(int argc, char **argv)
memset(&fcoe_config, 0, sizeof(fcoe_config));
- strncpy(progname, basename(argv[0]), sizeof(progname));
+ strlcpy(progname, basename(argv[0]), sizeof(progname));
sa_log_prefix = progname;
sa_log_flags = 0;
openlog(sa_log_prefix, LOG_CONS, LOG_DAEMON);
diff --git a/fipvlan.c b/fipvlan.c
index 7c00c7c2fec..1d6ca61d738 100644
--- a/fipvlan.c
+++ b/fipvlan.c
@@ -448,7 +448,7 @@ static void rtnl_recv_newlink(struct nlmsghdr *nh)
else
iff->iflink = iff->ifindex;
memcpy(iff->mac_addr, RTA_DATA(ifla[IFLA_ADDRESS]), ETHER_ADDR_LEN);
- strncpy(iff->ifname, RTA_DATA(ifla[IFLA_IFNAME]), IFNAMSIZ);
+ strlcpy(iff->ifname, RTA_DATA(ifla[IFLA_IFNAME]), IFNAMSIZ);
if (ifla[IFLA_LINKINFO]) {
parse_linkinfo(linkinfo, ifla[IFLA_LINKINFO]);
@@ -542,7 +542,7 @@ static void parse_cmdline(int argc, char **argv)
break;
case 'f':
if (optarg && strlen(optarg))
- strncpy(config.suffix, optarg, 256);
+ strlcpy(config.suffix, optarg, 256);
break;
case 'l':
config.link_retry = strtoul(optarg, NULL, 10);
@@ -621,8 +621,10 @@ create_and_start_vlan(struct fcf *fcf, bool vn2vn)
real_dev->ifname, fcf->vlan, vlan->ifname);
rc = 0;
} else {
- snprintf(vlan_name, IFNAMSIZ, "%s.%d%s",
- real_dev->ifname, fcf->vlan, config.suffix);
+ rc = snprintf(vlan_name, IFNAMSIZ, "%s.%d%s",
+ real_dev->ifname, fcf->vlan, config.suffix);
+ if (rc >= IFNAMSIZ)
+ return -E2BIG;
rc = vlan_create(fcf->ifindex, fcf->vlan, vlan_name);
if (rc < 0)
printf("Failed to create VLAN device %s\n\t%s\n",
diff --git a/lib/rtnetlink.c b/lib/rtnetlink.c
index 3b841371899..07518e39224 100644
--- a/lib/rtnetlink.c
+++ b/lib/rtnetlink.c
@@ -378,7 +378,7 @@ static int rtnl_getlinkname_handler(struct nlmsghdr *nh, void *arg)
switch (nh->nlmsg_type) {
case RTM_NEWLINK:
parse_ifinfo(ifla, nh);
- strncpy(name, RTA_DATA(ifla[IFLA_IFNAME]), IFNAMSIZ);
+ strlcpy(name, RTA_DATA(ifla[IFLA_IFNAME]), IFNAMSIZ);
return 0;
}
return -1;
diff --git a/lib/sysfs_hba.c b/lib/sysfs_hba.c
index 786215440ba..6db5ece3754 100644
--- a/lib/sysfs_hba.c
+++ b/lib/sysfs_hba.c
@@ -214,13 +214,13 @@ static void get_pci_device_info(struct pci_device *dev, struct hba_info *info)
if (!vname)
vname = unknown;
- strncpy(info->manufacturer, vname, sizeof(info->manufacturer));
+ strlcpy(info->manufacturer, vname, sizeof(info->manufacturer));
dname = pci_device_get_device_name(dev);
if (!dname)
dname = unknown;
- strncpy(info->model_description, dname,
+ strlcpy(info->model_description, dname,
sizeof(info->model_description));
pci_device_cfg_read_u8(dev, &revision, PCI_REVISION_ID);
@@ -238,8 +238,8 @@ static void get_module_info(const char *pcidev, struct hba_info *info)
char *path;
int err;
- strncpy(info->driver_name, "Unknown", sizeof(info->driver_name));
- strncpy(info->driver_version, "Unknown", sizeof(info->driver_version));
+ strlcpy(info->driver_name, "Unknown", sizeof(info->driver_name));
+ strlcpy(info->driver_version, "Unknown", sizeof(info->driver_version));
err = asprintf(&path, "/sys/bus/pci/devices/%s/driver/module", pcidev);
if (err == -1)
@@ -256,7 +256,7 @@ static void get_module_info(const char *pcidev, struct hba_info *info)
buf[err] = '\0';
if (strstr(buf, "module"))
- strncpy(info->driver_name,
+ strlcpy(info->driver_name,
strstr(buf, "module") + strlen("module") + 1,
sizeof(info->driver_name));
@@ -315,7 +315,7 @@ struct port_attributes *get_rport_attribs(const char *rport)
if (!pa)
goto free_path;
- strncpy(pa->device_name, rport, sizeof(pa->device_name));
+ strlcpy(pa->device_name, rport, sizeof(pa->device_name));
sa_sys_read_line(path, "node_name", pa->node_name,
sizeof(pa->node_name));
sa_sys_read_line(path, "port_name", pa->port_name,
@@ -390,7 +390,7 @@ struct port_attributes *get_port_attribs(const char *host)
if (!pa)
goto free_path;
- strncpy(pa->device_name, host, sizeof(pa->device_name));
+ strlcpy(pa->device_name, host, sizeof(pa->device_name));
sa_sys_read_line(path, "symbolic_name", pa->symbolic_name,
sizeof(pa->symbolic_name));
@@ -443,7 +443,7 @@ char *get_pci_dev_from_netdev(const char *netdev)
return NULL;
len = strlen(netdev) - strlen(subif);
- strncpy(realdev, netdev, len);
+ strlcpy(realdev, netdev, sizeof(realdev));
if (realdev[len] != '\0')
realdev[len] = '\0';
diff --git a/libopenfcoe.c b/libopenfcoe.c
index 07090d5a09a..27389bac9ec 100644
--- a/libopenfcoe.c
+++ b/libopenfcoe.c
@@ -59,6 +59,7 @@ static int add_fcoe_fcf_device(struct dirent *dp, void *arg)
{
struct fcoe_ctlr_device *ctlr = (struct fcoe_ctlr_device *)arg;
struct fcoe_fcf_device *fcf;
+ int rc;
if (!strstr(dp->d_name, "fcf") ||
(!strcmp(dp->d_name, "fcf_dev_loss_tmo")))
@@ -71,8 +72,10 @@ static int add_fcoe_fcf_device(struct dirent *dp, void *arg)
memset(fcf, 0, sizeof(struct fcoe_fcf_device));
/* Save the path */
- snprintf(fcf->path, sizeof(fcf->path),
- "%s/%s", ctlr->path, dp->d_name);
+ rc = snprintf(fcf->path, sizeof(fcf->path),
+ "%s/%s", ctlr->path, dp->d_name);
+ if (rc >= sizeof(fcf->path))
+ goto fail;
/* Use the index from the logical enumeration */
fcf->index = atoi(dp->d_name + sizeof("fcf_") - 1);
@@ -140,7 +143,7 @@ static int find_fchost(struct dirent *dp, void *arg)
char *fchost = arg;
if (strstr(dp->d_name, "host")) {
- strncpy(fchost, dp->d_name, MAX_STR_LEN);
+ strlcpy(fchost, dp->d_name, MAX_STR_LEN);
return 1;
}
@@ -179,7 +182,9 @@ static int read_fcoe_ctlr_device(struct dirent *dp, void *arg)
if (!rc)
goto fail;
- sprintf(hpath, "%s/%s/", SYSFS_FCHOST, fchost);
+ rc = snprintf(hpath, MAX_STR_LEN, "%s/%s/", SYSFS_FCHOST, fchost);
+ if (rc < 0 || rc >= MAX_STR_LEN)
+ goto fail;
rc = sa_sys_read_line(hpath, "symbolic_name", buf, sizeof(buf));
@@ -189,7 +194,7 @@ static int read_fcoe_ctlr_device(struct dirent *dp, void *arg)
goto fail;
ifname = get_ifname_from_symbolic_name(buf);
- strncpy(ctlr->ifname, ifname, IFNAMSIZ-1);
+ strlcpy(ctlr->ifname, ifname, IFNAMSIZ);
/* Get fcf device loss timeout */
sa_sys_read_u32(ctlr->path, "fcf_dev_loss_tmo",
@@ -198,7 +203,9 @@ static int read_fcoe_ctlr_device(struct dirent *dp, void *arg)
sa_sys_read_line(ctlr->path, "mode", buf, sizeof(buf));
sa_enum_encode(fip_conn_type_table, buf, &ctlr->mode);
- snprintf(lesb_path, sizeof(lesb_path), "%s/lesb/", ctlr->path);
+ rc = snprintf(lesb_path, sizeof(lesb_path), "%s/lesb/", ctlr->path);
+ if (rc >= sizeof(lesb_path))
+ goto fail;
/* Get LESB statistics */
sa_sys_read_u32(lesb_path, "link_fail",
--
2.21.0

51
0002-use-of-uninitialized-values-detected-during-LTO.patch Normal file
View File

@ -0,0 +1,51 @@
From 64254aee4509192831b9f9cf695abd81a9656f00 Mon Sep 17 00:00:00 2001
From: Chris Leech <cleech@redhat.com>
Date: Mon, 21 Sep 2020 09:33:23 -0700
Subject: [PATCH 2/2] use of uninitialized values detected during LTO
lto-wrapper build errors
Signed-off-by: Chris Leech <cleech@redhat.com>
---
fcoeadm_display.c | 2 +-
lib/sysfs_hba.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fcoeadm_display.c b/fcoeadm_display.c
index 4b1d358d1c8..585ecfae54e 100644
--- a/fcoeadm_display.c
+++ b/fcoeadm_display.c
@@ -348,7 +348,7 @@ static void show_short_lun_info(unsigned int hba, unsigned int port,
uint32_t blksize = 0;
char *capstr = "Unknown";
char *osname = "Unknown";
- uint64_t size;
+ uint64_t size = 0;
int rc;
rc = snprintf(path, sizeof(path),
diff --git a/lib/sysfs_hba.c b/lib/sysfs_hba.c
index a8d557e92b5..381f335d7ea 100644
--- a/lib/sysfs_hba.c
+++ b/lib/sysfs_hba.c
@@ -528,7 +528,7 @@ char *get_host_by_fcid(uint32_t fcid)
DIR *dir;
char *host = NULL;
char path[1024];
- uint32_t port_id;
+ uint32_t port_id = 0;
dir = opendir(SYSFS_HOST_DIR);
if (!dir)
@@ -562,7 +562,7 @@ char *get_rport_by_fcid(uint32_t fcid)
DIR *dir;
char *rport = NULL;
char path[1024];
- uint32_t port_id;
+ uint32_t port_id = 0;
dir = opendir(SYSFS_RPORT_DIR);
if (!dir)
--
2.18.1

19
fcoe-utils.spec
View File

@ -1,22 +1,23 @@
# https://fedoraproject.org/wiki/Packaging:Guidelines#Compiler_flags
%global _hardened_build 1
# v1.0.32-3-g9834b340d82
%global commit0 9834b340d8289bab48d961b6bb2698bab1f3965f
# v1.0.33-6-gfe376de5343
%global commit0 fe376de5343c58f108a14e67819626424054591b
%global shortcommit0 %(c=%{commit0}; echo ${c:0:7})
Name: fcoe-utils
Version: 1.0.32
Release: 12.git%{shortcommit0}%{?dist}
Version: 1.0.33
Release: 0.git%{shortcommit0}%{?dist}
Summary: Fibre Channel over Ethernet utilities
License: GPLv2
URL: http://www.open-fcoe.org
Source0: https://github.com/morbidrsa/fcoe-utils/archive/%{commit0}.tar.gz#/%{name}-%{version}-%{shortcommit0}.tar.gz
Source0: https://github.com/openSUSE/fcoe-utils/archive/%{commit0}.tar.gz#/%{name}-%{version}-%{shortcommit0}.tar.gz
Source1: quickstart.txt
Source2: fcoe.service
Source3: fcoe.config
ExcludeArch: ppc s390
Patch0: 0001-string-warning-fixes.patch
Patch1: 0001-21-string-op-truncation-format-truncation-and-format.patch
Patch2: 0002-s390x-lto-wrapper-build-errors.patch
BuildRequires: autoconf
BuildRequires: automake
BuildRequires: libpciaccess-devel
@ -78,10 +79,14 @@ rm -f %{buildroot}/%{_sysconfdir}/fcoe/config
%{_sysconfdir}/fcoe/
%config(noreplace) %{_sysconfdir}/fcoe/cfg-ethx
%config(noreplace) %{_sysconfdir}/sysconfig/fcoe
%{_sysconfdir}/bash_completion.d/*
%{_datadir}/bash-completion/completions/*
%{_libexecdir}/fcoe/
%changelog
* Mon Sep 21 2020 Chris Leech <cleech@redhat.com> - 1.0.33-0.gitfe376de
- FTBFS: fix gcc 10.2 truncation and overflow errors
- rebase to 1.0.33+ from new upstream location
* Sat Aug 01 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.0.32-12.git9834b34
- Second attempt - Rebuilt for
https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild

2
sources
View File

@ -1 +1 @@
SHA512 (fcoe-utils-1.0.32-9834b34.tar.gz) = bbe9af0b277fd1b5e0a14b5865fdaa5812142cce33a2440a9ecf44e0607a4284d1a3402c72b4a3408f5aa87dafbb19de9c22f3a45cc35d092901475f9cddcc0a
SHA512 (fcoe-utils-1.0.33-fe376de.tar.gz) = 76f4225b6a235f955fd39499987d5dfef0dfd5d00fe603770b3ff162348b962d2c11b8b567a389314ca8284f110e155fe5e31b78511ad129a636c88ed25d4f3d