static int add_swap(const char *what, struct mntent *me) {
_cleanup_free_ char *name = NULL, *unit = NULL, *lnk = NULL;
_cleanup_fclose_ FILE *f = NULL;
_cleanup_free_ char *discard = NULL;
bool noauto;
int r, pri = -1;
assert(what);
assert(me);
if (detect_container(NULL) > 0) {
log_info("Running in a container, ignoring fstab swap entry for %s.", what);
return 0;
}
r = mount_find_pri(me, &pri);
if (r < 0) {
log_error("Failed to parse priority");
return r;
}
r = mount_find_discard(me, &discard);
if (r < 0) {
log_error("Failed to parse discard");
return r;
}
noauto = !!hasmntopt(me, "noauto");
name = unit_name_from_path(what, ".swap");
if (!name)
return log_oom();
unit = strjoin(arg_dest, "/", name, NULL);
if (!unit)
return log_oom();
f = fopen(unit, "wxe");
if (!f) {
if (errno == EEXIST)
log_error("Failed to create swap unit file %s, as it already exists. Duplicate entry in /etc/fstab?", unit);
else
log_error("Failed to create unit file %s: %m", unit);
return -errno;
}
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=/etc/fstab\n"
"Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n\n"
"[Swap]\n"
"What=%s\n",
what);
if (pri >= 0)
fprintf(f, "Priority=%i\n", pri);
if (discard)
fprintf(f, "Discard=%s\n", discard);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file %s: %m", unit);
return -errno;
}
/* use what as where, to have a nicer error message */
r = generator_write_timeouts(arg_dest, what, what, me->mnt_opts, NULL);
if (r < 0)
return r;
if (!noauto) {
lnk = strjoin(arg_dest, "/" SPECIAL_SWAP_TARGET ".wants/", name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
}
return 0;
}
static int add_swap(const char *what, struct mntent *me) {
_cleanup_free_ char *name = NULL, *unit = NULL, *lnk = NULL, *device = NULL;
_cleanup_fclose_ FILE *f = NULL;
bool noauto, nofail;
int r, pri = -1;
assert(what);
assert(me);
r = mount_find_pri(me, &pri);
if (r < 0) {
log_error("Failed to parse priority");
return pri;
}
noauto = !!hasmntopt(me, "noauto");
nofail = !!hasmntopt(me, "nofail");
name = unit_name_from_path(what, ".swap");
if (!name)
return log_oom();
unit = strjoin(arg_dest, "/", name, NULL);
if (!unit)
return log_oom();
f = fopen(unit, "wxe");
if (!f) {
if (errno == EEXIST)
log_error("Failed to create swap unit file %s, as it already exists. Duplicate entry in /etc/fstab?", unit);
else
log_error("Failed to create unit file %s: %m", unit);
return -errno;
}
fputs("# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=/etc/fstab\n"
"DefaultDependencies=no\n"
"Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
"Before=" SPECIAL_UMOUNT_TARGET "\n", f);
if (!noauto && !nofail)
fputs("Before=" SPECIAL_SWAP_TARGET "\n", f);
fprintf(f,
"\n"
"[Swap]\n"
"What=%s\n",
what);
if (pri >= 0)
fprintf(f,
"Priority=%i\n",
pri);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file %s: %m", unit);
return -errno;
}
if (!noauto) {
lnk = strjoin(arg_dest, "/" SPECIAL_SWAP_TARGET ".wants/", name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
r = device_name(what, &device);
if (r < 0)
return r;
if (r > 0) {
free(lnk);
lnk = strjoin(arg_dest, "/", device, ".wants/", name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
}
}
return 0;
}
static int add_swap(const char *what, struct mntent *me) {
char *name = NULL, *unit = NULL, *lnk = NULL, *device = NULL;
FILE *f = NULL;
bool noauto, nofail;
int r, pri = -1;
assert(what);
assert(me);
r = mount_find_pri(me, &pri);
if (r < 0) {
log_error("Failed to parse priority");
return pri;
}
noauto = !!hasmntopt(me, "noauto");
nofail = !!hasmntopt(me, "nofail");
name = unit_name_from_path(what, ".swap");
if (!name) {
r = log_oom();
goto finish;
}
unit = strjoin(arg_dest, "/", name, NULL);
if (!unit) {
r = log_oom();
goto finish;
}
f = fopen(unit, "wxe");
if (!f) {
r = -errno;
log_error("Failed to create unit file: %m");
goto finish;
}
fputs("# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=/etc/fstab\n"
"DefaultDependencies=no\n"
"Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
"Before=" SPECIAL_UMOUNT_TARGET "\n", f);
if (!noauto && !nofail)
fputs("Before=" SPECIAL_SWAP_TARGET "\n", f);
fprintf(f,
"\n"
"[Swap]\n"
"What=%s\n",
what);
if (pri >= 0)
fprintf(f,
"Priority=%i\n",
pri);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file: %m");
r = -errno;
goto finish;
}
if (!noauto) {
lnk = strjoin(arg_dest, "/" SPECIAL_SWAP_TARGET ".wants/", name, NULL);
if (!lnk) {
r = log_oom();
goto finish;
}
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink: %m");
r = -errno;
goto finish;
}
r = device_name(what, &device);
if (r < 0)
goto finish;
if (r > 0) {
free(lnk);
lnk = strjoin(arg_dest, "/", device, ".wants/", name, NULL);
if (!lnk) {
r = log_oom();
goto finish;
}
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink: %m");
r = -errno;
goto finish;
}
}
}
r = 0;
finish:
if (f)
fclose(f);
free(unit);
free(lnk);
free(name);
free(device);
return r;
}
