diff options
Diffstat (limited to 'src/nspawn/nspawn-settings.c')
-rw-r--r-- | src/nspawn/nspawn-settings.c | 516 |
1 files changed, 0 insertions, 516 deletions
diff --git a/src/nspawn/nspawn-settings.c b/src/nspawn/nspawn-settings.c deleted file mode 100644 index 5f1522cfb6..0000000000 --- a/src/nspawn/nspawn-settings.c +++ /dev/null @@ -1,516 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2015 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "alloc-util.h" -#include "cap-list.h" -#include "conf-parser.h" -#include "nspawn-network.h" -#include "nspawn-settings.h" -#include "parse-util.h" -#include "process-util.h" -#include "socket-util.h" -#include "string-util.h" -#include "strv.h" -#include "user-util.h" -#include "util.h" - -int settings_load(FILE *f, const char *path, Settings **ret) { - _cleanup_(settings_freep) Settings *s = NULL; - int r; - - assert(path); - assert(ret); - - s = new0(Settings, 1); - if (!s) - return -ENOMEM; - - s->start_mode = _START_MODE_INVALID; - s->personality = PERSONALITY_INVALID; - s->userns_mode = _USER_NAMESPACE_MODE_INVALID; - s->uid_shift = UID_INVALID; - s->uid_range = UID_INVALID; - - s->read_only = -1; - s->volatile_mode = _VOLATILE_MODE_INVALID; - s->userns_chown = -1; - - s->private_network = -1; - s->network_veth = -1; - - r = config_parse(NULL, path, f, - "Exec\0" - "Network\0" - "Files\0", - config_item_perf_lookup, nspawn_gperf_lookup, - false, - false, - true, - s); - if (r < 0) - return r; - - /* Make sure that if userns_mode is set, userns_chown is set to something appropriate, and vice versa. Either - * both fields shall be initialized or neither. */ - if (s->userns_mode == USER_NAMESPACE_PICK) - s->userns_chown = true; - else if (s->userns_mode != _USER_NAMESPACE_MODE_INVALID && s->userns_chown < 0) - s->userns_chown = false; - - if (s->userns_chown >= 0 && s->userns_mode == _USER_NAMESPACE_MODE_INVALID) - s->userns_mode = USER_NAMESPACE_NO; - - *ret = s; - s = NULL; - - return 0; -} - -Settings* settings_free(Settings *s) { - - if (!s) - return NULL; - - strv_free(s->parameters); - strv_free(s->environment); - free(s->user); - free(s->working_directory); - - strv_free(s->network_interfaces); - strv_free(s->network_macvlan); - strv_free(s->network_ipvlan); - strv_free(s->network_veth_extra); - free(s->network_bridge); - free(s->network_zone); - expose_port_free_all(s->expose_ports); - - custom_mount_free_all(s->custom_mounts, s->n_custom_mounts); - free(s); - - return NULL; -} - -bool settings_private_network(Settings *s) { - assert(s); - - return - s->private_network > 0 || - s->network_veth > 0 || - s->network_bridge || - s->network_zone || - s->network_interfaces || - s->network_macvlan || - s->network_ipvlan || - s->network_veth_extra; -} - -bool settings_network_veth(Settings *s) { - assert(s); - - return - s->network_veth > 0 || - s->network_bridge || - s->network_zone; -} - -DEFINE_CONFIG_PARSE_ENUM(config_parse_volatile_mode, volatile_mode, VolatileMode, "Failed to parse volatile mode"); - -int config_parse_expose_port( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - Settings *s = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - r = expose_port_parse(&s->expose_ports, rvalue); - if (r == -EEXIST) { - log_syntax(unit, LOG_ERR, filename, line, r, "Duplicate port specification, ignoring: %s", rvalue); - return 0; - } - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse host port %s: %m", rvalue); - return 0; - } - - return 0; -} - -int config_parse_capability( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - uint64_t u = 0, *result = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - for (;;) { - _cleanup_free_ char *word = NULL; - int cap; - - r = extract_first_word(&rvalue, &word, NULL, 0); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract capability string, ignoring: %s", rvalue); - return 0; - } - if (r == 0) - break; - - cap = capability_from_name(word); - if (cap < 0) { - log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse capability, ignoring: %s", word); - continue; - } - - u |= 1 << ((uint64_t) cap); - } - - if (u == 0) - return 0; - - *result |= u; - return 0; -} - -int config_parse_id128( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - sd_id128_t t, *result = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - r = sd_id128_from_string(rvalue, &t); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue); - return 0; - } - - *result = t; - return 0; -} - -int config_parse_bind( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - Settings *settings = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - r = bind_mount_parse(&settings->custom_mounts, &settings->n_custom_mounts, rvalue, ltype); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "Invalid bind mount specification %s: %m", rvalue); - return 0; - } - - return 0; -} - -int config_parse_tmpfs( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - Settings *settings = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - r = tmpfs_mount_parse(&settings->custom_mounts, &settings->n_custom_mounts, rvalue); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "Invalid temporary file system specification %s: %m", rvalue); - return 0; - } - - return 0; -} - -int config_parse_veth_extra( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - Settings *settings = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - r = veth_extra_parse(&settings->network_veth_extra, rvalue); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "Invalid extra virtual Ethernet link specification %s: %m", rvalue); - return 0; - } - - return 0; -} - -int config_parse_network_zone( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - Settings *settings = data; - _cleanup_free_ char *j = NULL; - - assert(filename); - assert(lvalue); - assert(rvalue); - - j = strappend("vz-", rvalue); - if (!ifname_valid(j)) { - log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid network zone name %s, ignoring: %m", rvalue); - return 0; - } - - free(settings->network_zone); - settings->network_zone = j; - j = NULL; - - return 0; -} - -int config_parse_boot( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - Settings *settings = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - r = parse_boolean(rvalue); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Boot= parameter %s, ignoring: %m", rvalue); - return 0; - } - - if (r > 0) { - if (settings->start_mode == START_PID2) - goto conflict; - - settings->start_mode = START_BOOT; - } else { - if (settings->start_mode == START_BOOT) - goto conflict; - - if (settings->start_mode < 0) - settings->start_mode = START_PID1; - } - - return 0; - -conflict: - log_syntax(unit, LOG_ERR, filename, line, r, "Conflicting Boot= or ProcessTwo= setting found. Ignoring."); - return 0; -} - -int config_parse_pid2( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - Settings *settings = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - r = parse_boolean(rvalue); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse ProcessTwo= parameter %s, ignoring: %m", rvalue); - return 0; - } - - if (r > 0) { - if (settings->start_mode == START_BOOT) - goto conflict; - - settings->start_mode = START_PID2; - } else { - if (settings->start_mode == START_PID2) - goto conflict; - - if (settings->start_mode < 0) - settings->start_mode = START_PID1; - } - - return 0; - -conflict: - log_syntax(unit, LOG_ERR, filename, line, r, "Conflicting Boot= or ProcessTwo= setting found. Ignoring."); - return 0; -} - -int config_parse_private_users( - const char *unit, - const char *filename, - unsigned line, - const char *section, - unsigned section_line, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { - - Settings *settings = data; - int r; - - assert(filename); - assert(lvalue); - assert(rvalue); - - r = parse_boolean(rvalue); - if (r == 0) { - /* no: User namespacing off */ - settings->userns_mode = USER_NAMESPACE_NO; - settings->uid_shift = UID_INVALID; - settings->uid_range = UINT32_C(0x10000); - } else if (r > 0) { - /* yes: User namespacing on, UID range is read from root dir */ - settings->userns_mode = USER_NAMESPACE_FIXED; - settings->uid_shift = UID_INVALID; - settings->uid_range = UINT32_C(0x10000); - } else if (streq(rvalue, "pick")) { - /* pick: User namespacing on, UID range is picked randomly */ - settings->userns_mode = USER_NAMESPACE_PICK; - settings->uid_shift = UID_INVALID; - settings->uid_range = UINT32_C(0x10000); - } else { - const char *range, *shift; - uid_t sh, rn; - - /* anything else: User namespacing on, UID range is explicitly configured */ - - range = strchr(rvalue, ':'); - if (range) { - shift = strndupa(rvalue, range - rvalue); - range++; - - r = safe_atou32(range, &rn); - if (r < 0 || rn <= 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "UID/GID range invalid, ignoring: %s", range); - return 0; - } - } else { - shift = rvalue; - rn = UINT32_C(0x10000); - } - - r = parse_uid(shift, &sh); - if (r < 0) { - log_syntax(unit, LOG_ERR, filename, line, r, "UID/GID shift invalid, ignoring: %s", range); - return 0; - } - - settings->userns_mode = USER_NAMESPACE_FIXED; - settings->uid_shift = sh; - settings->uid_range = rn; - } - - return 0; -} |