#include <stdint.h>
#include <stdlib.h>
+#include <stdbool.h>
#include <sys/types.h>
/** the value which is returned in error-case (no ctx found) */
-#define VC_NOCTX ((ctx_t)(-1))
+#define VC_NOCTX ((xid_t)(-1))
/** the value which means a random (the next free) ctx */
-#define VC_RANDCTX ((ctx_t)(-1))
+#define VC_RANDCTX ((xid_t)(-1))
/** the value which means the current ctx */
-#define VC_SAMECTX ((ctx_t)(-2))
+#define VC_SAMECTX ((xid_t)(-2))
#define VC_LIM_INFINITY (~0ULL)
#define VC_LIM_KEEP (~1ULL)
#define VC_CAP_LEASE 28
#define VC_CAP_QUOTACTL 29
+#define VC_IMMUTABLE_FILE_FL 0x00000010l
+#define VC_IMMUTABLE_LINK_FL 0x00008000l
+#define VC_IMMUTABLE_ALL (VC_IMMUTABLE_LINK_FL|VC_IMMUTABLE_FILE_FL)
+
+#define VC_IATTR_XID 0x01000000
+
+#define VC_IATTR_ADMIN 0x00000001
+#define VC_IATTR_WATCH 0x00000002
+#define VC_IATTR_HIDE 0x00000004
+
+#define VC_IATTR_BARRIER 0x00010000
+#define VC_IATTR_IUNLINK 0x00020000
+
#ifdef __cplusplus
extern "C" {
uint32_t mask;
};
- /** Returns version of the given API-category */
- int vc_get_version(int category);
+ /** Returns the version of the current kernel API. */
+ int vc_get_version();
/** Puts current process into context <ctx>, removes the given caps and
* sets flags.
* Special values for ctx are
- * - -2 which means the current context (just for changing caps and flags)
- * - -1 which means the next free context; this value can be used by
- * ordinary users also */
- int vc_new_s_context(ctx_t ctx, unsigned int remove_cap, unsigned int flags);
+ * - VC_SAMECTX which means the current context (just for changing caps and flags)
+ * - VC_RANDCTX which means the next free context; this value can be used by
+ * ordinary users also
+ * See http://vserver.13thfloor.at/Stuff/Logic.txt for details */
+ xid_t vc_new_s_context(xid_t ctx, unsigned int remove_cap, unsigned int flags);
/** Sets the ipv4root information.
* \precondition: nb<16 */
int vc_set_ipv4root(uint32_t bcast, size_t nb, struct vc_ip_mask_pair const *ips);
- int vc_chrootsafe(char const *dir);
-
/* rlimit related functions */
typedef uint64_t vc_limit_t;
uint32_t hard;
};
- int vc_get_rlimit(ctx_t ctx, int resource, struct vc_rlimit *lim);
- int vc_set_rlimit(ctx_t ctx, int resource, struct vc_rlimit const *lim);
- int vc_get_rlimit_mask(ctx_t ctx, struct vc_rlimit_mask *lim);
+ int vc_get_rlimit(xid_t ctx, int resource, struct vc_rlimit *lim);
+ int vc_set_rlimit(xid_t ctx, int resource, struct vc_rlimit const *lim);
+ int vc_get_rlimit_mask(xid_t ctx, struct vc_rlimit_mask *lim);
+
+
+ /** sends a signal to a context/pid
+ Special values for pid are:
+ * -1 which means every process in ctx except the init-process
+ * 0 which means every process in ctx inclusive the init-process */
+ int vc_ctx_kill(xid_t ctx, pid_t pid, int sig);
+
+
+
+ int vc_set_iattr(dev_t dev, ino_t ino, xid_t xid, uint32_t flags, uint32_t mask);
+ int vc_get_iattr(dev_t dev, ino_t ino, xid_t * /*@null@*/ xid,
+ uint32_t * /*@null@*/ flags, uint32_t * /*@null@*/ mask);
+
+ int vc_set_iattr_compat(char const *filename,
+ dev_t dev, ino_t ino, xid_t xid,
+ uint32_t flags, uint32_t mask,
+ mode_t const * /*@null@*/ mode);
+ int vc_get_iattr_compat(char const *filename,
+ dev_t dev, ino_t ino,
+ xid_t * /*@null@*/ xid,
+ uint32_t * /*@null@*/ flags,
+ uint32_t * /*@inout@*/ mask,
+ mode_t const * /*@null@*/ mode);
+ struct vc_vx_info {
+ xid_t xid;
+ pid_t initpid;
+ };
+
/** Returns the context of the given process. pid==0 means the current process. */
- ctx_t vc_X_getctx(pid_t pid);
+ xid_t vc_get_task_xid(pid_t pid);
+ int vc_get_vx_info(xid_t xid, struct vc_vx_info *info);
- /** Returns the pid of the 'init' process */
- pid_t vc_X_getinitpid(pid_t pid);
+ typedef enum { vcVHI_CONTEXT, vcVHI_SYSNAME, vcVHI_NODENAME,
+ vcVHI_RELEASE, vcVHI_VERSION, vcVHI_MACHINE,
+ vcVHI_DOMAINNAME } vc_uts_type;
+
+ int vc_set_vhi_name(xid_t xid, vc_uts_type type, char const *val, size_t len);
+ int vc_get_vhi_name(xid_t xid, vc_uts_type type, char *val, size_t len);
+
int vc_text2cap(char const *);
char const * vc_cap2text(int);
+ inline static int vc_get_securecaps() {
+ return ( (1<<VC_CAP_LINUX_IMMUTABLE) | (1<<VC_CAP_NET_BROADCAST) |
+ (1<<VC_CAP_NET_ADMIN) | (1<<VC_CAP_NET_RAW) |
+ (1<<VC_CAP_IPC_LOCK) | (1<<VC_CAP_IPC_OWNER) |
+ (1<<VC_CAP_SYS_MODULE) | (1<<VC_CAP_SYS_RAWIO) |
+ (1<<VC_CAP_SYS_PACCT) | (1<<VC_CAP_SYS_ADMIN) |
+ (1<<VC_CAP_SYS_BOOT) | (1<<VC_CAP_SYS_NICE) |
+ (1<<VC_CAP_SYS_RESOURCE) | (1<<VC_CAP_SYS_TIME) |
+ (1<<VC_CAP_MKNOD) | (1<<VC_CAP_QUOTACTL) );
+ }
+
+ inline static int vc_setfilecontext(dev_t dev, ino_t ino, xid_t xid) {
+ return vc_set_iattr(dev, ino, xid, 0, VC_IATTR_XID);
+ }
+
+ inline static xid_t vc_getfilecontext(dev_t dev, ino_t ino) {
+ xid_t res;
+ if (vc_get_iattr(dev, ino, &res, 0,0)==-1) return VC_NOCTX;
+ return res;
+ }
+
/* The management part */
be freed by the caller. */
char * vc_getVserverName(char const *id, vcCfgStyle style);
- char * vc_getVserverVdir(char const *id, vcCfgStyle style);
+ /** Returns the path of the vserver configuration directory. When the given
+ * vserver does not exist, or when it does not have such a directory, NULL
+ * will be returned. Else, the result will be allocated and must be freed
+ * by the caller. */
+ char * vc_getVserverCfgDir(char const *id, vcCfgStyle style);
+
+ /** Returns the path of the configuration directory for the given
+ * application. The result will be allocated and must be freed by the
+ * caller. */
+ char * vc_getVserverAppDir(char const *id, vcCfgStyle style, char const *app);
+
+ /** Returns the path to the vserver root-directory. The result will be
+ * allocated and must be freed by the caller. */
+ char * vc_getVserverVdir(char const *id, vcCfgStyle style, bool physical);
+
+ /** Returns the ctx of the given vserver. When vserver is not running and
+ * 'honor_static' is false, VC_NOCTX will be returned. Else, when
+ * 'honor_static' is true and a static assignment exists, those value will
+ * be returned. Else, the result will be VC_NOCTX.
+ *
+ * When 'is_running' is not null, the status of the vserver will be
+ * assigned to this variable. */
+ xid_t vc_getVserverCtx(char const *id, vcCfgStyle style,
+ bool honor_static, bool /*@null@*/ *is_running);
+
+ /** Resolves the cfg-path of the vserver owning the given ctx. 'revdir' will
+ be used as the directory holding the mapping-links; when NULL, the
+ default value will be assumed. The result will be allocated and must be
+ freed by the caller. */
+ char * vc_getVserverByCtx(xid_t ctx, /*@null@*/vcCfgStyle *style,
+ /*@null@*/char const *revdir);
#ifdef __cplusplus
}