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authorLennart Poettering <lennart@poettering.net>2015-07-29 20:31:07 +0200
committerLennart Poettering <lennart@poettering.net>2015-07-29 20:31:07 +0200
commitdacd6cee76a08331b8c8616c5f30f70ee49aa2f9 (patch)
tree7a7d73f2ac1f909255361781ca923365b6c9b7c3 /src/libsystemd-network
parent8388607b5851574e50a6e65db98135b793b08910 (diff)
tree-wide: port everything over to fflush_and_check()
Some places invoked fflush() directly with their own manual error checking, let's unify all that by using fflush_and_check(). This also unifies the general error paths of fflush()+rename() file writers.
Diffstat (limited to 'src/libsystemd-network')
-rw-r--r--src/libsystemd-network/sd-dhcp-lease.c31
-rw-r--r--src/libsystemd-network/sd-lldp.c64
2 files changed, 56 insertions, 39 deletions
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c
index 54417b3af3..febf9f87f3 100644
--- a/src/libsystemd-network/sd-dhcp-lease.c
+++ b/src/libsystemd-network/sd-dhcp-lease.c
@@ -643,13 +643,13 @@ int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
r = fopen_temporary(lease_file, &f, &temp_path);
if (r < 0)
- goto finish;
+ goto fail;
fchmod(fileno(f), 0644);
r = sd_dhcp_lease_get_address(lease, &address);
if (r < 0)
- goto finish;
+ goto fail;
fprintf(f,
"# This is private data. Do not parse.\n"
@@ -657,7 +657,7 @@ int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
r = sd_dhcp_lease_get_netmask(lease, &address);
if (r < 0)
- goto finish;
+ goto fail;
fprintf(f, "NETMASK=%s\n", inet_ntoa(address));
@@ -713,7 +713,7 @@ int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
client_id_hex = hexmem(client_id, client_id_len);
if (!client_id_hex) {
r = -ENOMEM;
- goto finish;
+ goto fail;
}
fprintf(f, "CLIENTID=%s\n", client_id_hex);
}
@@ -725,26 +725,27 @@ int sd_dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
option_hex = hexmem(data, data_len);
if (!option_hex) {
r = -ENOMEM;
- goto finish;
+ goto fail;
}
fprintf(f, "VENDOR_SPECIFIC=%s\n", option_hex);
}
- r = 0;
-
- fflush(f);
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
- if (ferror(f) || rename(temp_path, lease_file) < 0) {
+ if (rename(temp_path, lease_file) < 0) {
r = -errno;
- unlink(lease_file);
- unlink(temp_path);
+ goto fail;
}
-finish:
- if (r < 0)
- log_error_errno(r, "Failed to save lease data %s: %m", lease_file);
+ return 0;
+
+fail:
+ if (temp_path)
+ (void) unlink(temp_path);
- return r;
+ return log_error_errno(r, "Failed to save lease data %s: %m", lease_file);
}
int sd_dhcp_lease_load(sd_dhcp_lease **ret, const char *lease_file) {
diff --git a/src/libsystemd-network/sd-lldp.c b/src/libsystemd-network/sd-lldp.c
index 6a2c05185d..034163eb9e 100644
--- a/src/libsystemd-network/sd-lldp.c
+++ b/src/libsystemd-network/sd-lldp.c
@@ -440,7 +440,7 @@ int sd_lldp_save(sd_lldp *lldp, const char *lldp_file) {
r = fopen_temporary(lldp_file, &f, &temp_path);
if (r < 0)
- goto finish;
+ goto fail;
fchmod(fileno(f), 0644);
@@ -457,8 +457,10 @@ int sd_lldp_save(sd_lldp *lldp, const char *lldp_file) {
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], type);
s = strdup(buf);
- if (!s)
- return -ENOMEM;
+ if (!s) {
+ r = -ENOMEM;
+ goto fail;
+ }
r = lldp_read_port_id(p->packet, &type, &length, &port_id);
if (r < 0)
@@ -466,8 +468,10 @@ int sd_lldp_save(sd_lldp *lldp, const char *lldp_file) {
if (type != LLDP_PORT_SUBTYPE_MAC_ADDRESS) {
k = strndup((char *) port_id, length -1);
- if (!k)
- return -ENOMEM;
+ if (!k) {
+ r = -ENOMEM;
+ goto fail;
+ }
sprintf(buf, "'_Port=%s' '_PType=%d' ", k , type);
free(k);
@@ -478,8 +482,10 @@ int sd_lldp_save(sd_lldp *lldp, const char *lldp_file) {
}
k = strappend(s, buf);
- if (!k)
- return -ENOMEM;
+ if (!k) {
+ r = -ENOMEM;
+ goto fail;
+ }
free(s);
s = k;
@@ -493,8 +499,10 @@ int sd_lldp_save(sd_lldp *lldp, const char *lldp_file) {
sprintf(buf, "'_TTL="USEC_FMT"' ", p->until);
k = strappend(s, buf);
- if (!k)
- return -ENOMEM;
+ if (!k) {
+ r = -ENOMEM;
+ goto fail;
+ }
free(s);
s = k;
@@ -504,15 +512,19 @@ int sd_lldp_save(sd_lldp *lldp, const char *lldp_file) {
k = strappend(s, "'_NAME=N/A' ");
else {
t = strndup(k, length);
- if (!t)
- return -ENOMEM;
+ if (!t) {
+ r = -ENOMEM;
+ goto fail;
+ }
k = strjoin(s, "'_NAME=", t, "' ", NULL);
free(t);
}
- if (!k)
- return -ENOMEM;
+ if (!k) {
+ r = -ENOMEM;
+ goto fail;
+ }
free(s);
s = k;
@@ -522,8 +534,10 @@ int sd_lldp_save(sd_lldp *lldp, const char *lldp_file) {
sprintf(buf, "'_CAP=%x'", data);
k = strappend(s, buf);
- if (!k)
- return -ENOMEM;
+ if (!k) {
+ r = -ENOMEM;
+ goto fail;
+ }
free(s);
s = k;
@@ -531,21 +545,23 @@ int sd_lldp_save(sd_lldp *lldp, const char *lldp_file) {
fprintf(f, "%s\n", s);
}
}
- r = 0;
- fflush(f);
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
- if (ferror(f) || rename(temp_path, lldp_file) < 0) {
+ if (rename(temp_path, lldp_file) < 0) {
r = -errno;
- unlink(lldp_file);
- unlink(temp_path);
+ goto fail;
}
- finish:
- if (r < 0)
- log_error("Failed to save lldp data %s: %s", lldp_file, strerror(-r));
+ return 0;
+
+ fail:
+ if (temp_path)
+ (void) unlink(temp_path);
- return r;
+ return log_error_errno(r, "Failed to save lldp data %s: %m", lldp_file);
}
int sd_lldp_start(sd_lldp *lldp) {