Functions | |
| int | vc_syscall (uint32_t cmd, xid_t xid, void *data) |
| The generic vserver syscall. | |
| int | vc_get_version () |
| Returns the version of the current kernel API. | |
| int | vc_get_vci () |
| Returns the kernel configuration bits. | |
| xid_t | vc_new_s_context (xid_t ctx, unsigned int remove_cap, unsigned int flags) |
| Moves current process into a context. | |
| int | vc_set_ipv4root (uint32_t bcast, size_t nb, struct vc_ip_mask_pair const *ips) |
| Sets the ipv4root information. | |
| xid_t | vc_ctx_create (xid_t xid) |
| Creates a context without starting it. | |
| int | vc_ctx_migrate (xid_t xid) |
| Moves the current process into the specified context. | |
| int | vc_ctx_stat (xid_t xid, struct vc_ctx_stat *stat) |
| Get some statistics about a context. | |
| int | vc_virt_stat (xid_t xid, struct vc_virt_stat *stat) |
| Get more statistics about a context. | |
| int | vc_get_rlimit (xid_t xid, int resource, struct vc_rlimit *lim) |
| Returns the limits of resource. | |
| int | vc_set_rlimit (xid_t xid, int resource, struct vc_rlimit const *lim) |
| Sets the limits of resource. | |
| int | vc_rlimit_stat (xid_t xid, int resource, struct vc_rlimit_stat *stat) |
| Returns the current stats of resource. | |
| int | vc_reset_minmax (xid_t xid) |
| Resets the minimum and maximum observed values for all resources. | |
| int | vc_ctx_kill (xid_t ctx, pid_t pid, int sig) |
| Sends a signal to a context/pid. | |
| int | vc_get_iattr (char const *filename, xid_t *xid, uint_least32_t *flags, uint_least32_t *mask) |
| Returns information about attributes and assigned context of a file. | |
| xid_t | vc_get_task_xid (pid_t pid) |
| Returns the context of the given process. | |
| xid_t | vc_getfilecontext (char const *filename) |
Returns the context of filename. | |
| int | vc_wait_exit (xid_t xid) |
| Waits for the end of a context. | |
Creates a context without starting it.
This functions initializes a new context. When already in a freshly created context, this old context will be discarded.
| xid | The new context; special values are:
|
errno will be set appropriately. | int vc_ctx_kill | ( | xid_t | ctx, | |
| pid_t | pid, | |||
| int | sig | |||
| ) |
Sends a signal to a context/pid.
Special values for pid are:
| int vc_ctx_migrate | ( | xid_t | xid | ) |
Moves the current process into the specified context.
| xid | The new context |
| int vc_ctx_stat | ( | xid_t | xid, | |
| struct vc_ctx_stat * | stat | |||
| ) |
Get some statistics about a context.
| xid | The context to get stats about | |
| stat | Where to store the result |
| int vc_get_iattr | ( | char const * | filename, | |
| xid_t * | xid, | |||
| uint_least32_t * | flags, | |||
| uint_least32_t * | mask | |||
| ) |
Returns information about attributes and assigned context of a file.
This function returns the VC_IATTR_XXX flags and about the assigned context of a file. To request an information, the appropriate bit in mask must be set and the corresponding parameter (xid or flags) must not be NULL.
E.g. to receive the assigned context, the VC_IATTR_XID bit must be set in mask, and xid must point to valid memory.
Possible flags are VC_IATTR_ADMIN, VC_IATTR_WATCH , VC_IATTR_HIDE, VC_IATTR_BARRIER, VC_IATTR_IUNLINK and VC_IATTR_IMMUTABLE.
| filename | The name of the file whose attributes shall be determined. | |
| xid | When non-zero and the VC_IATTR_XID bit is set in mask, the assigned context of filename will be stored there. | |
| flags | When non-zero, a bitmask of current attributes will be stored there. These attributes must be requested explicitly by setting the appropriate bit in mask | |
| mask | Points to a bitmask which tells which attributes shall be determined. On return, it will masquerade the attributes which were determined. |
Returns the limits of resource.
| xid | The id of the context | |
| resource | The resource which will be queried | |
| lim | The result which will be filled with the limits |
| xid_t vc_get_task_xid | ( | pid_t | pid | ) |
Returns the context of the given process.
| pid | the process-id whose xid shall be determined; pid==0 means the current process. |
pid or -1 on errors | int vc_get_vci | ( | ) |
Returns the kernel configuration bits.
| int vc_get_version | ( | ) |
Returns the version of the current kernel API.
| xid_t vc_getfilecontext | ( | char const * | filename | ) |
Returns the context of filename.
This function calls vc_get_iattr() with appropriate arguments to determine the context of filename. In error-case or when no context is assigned, VC_NOCTX will be returned. To differ between both cases, errno must be examined.
WARNING: this function can modify errno although no error happened.
| filename | The file to check |
errno will be 0 in the latter case Moves current process into a context.
Puts current process into context ctx, removes the capabilities given in remove_cap and sets flags.
| ctx | The new context; special values for are
| |
| remove_cap | The linux capabilities which will be removed. | |
| flags | Special flags which will be set. |
errno will be set appropriately| int vc_reset_minmax | ( | xid_t | xid | ) |
Resets the minimum and maximum observed values for all resources.
| xid | The id of the context |
| int vc_rlimit_stat | ( | xid_t | xid, | |
| int | resource, | |||
| struct vc_rlimit_stat * | stat | |||
| ) |
Returns the current stats of resource.
| xid | The id of the context | |
| resource | The resource which will be queried | |
| stat | The result which will be filled with the stats |
| int vc_set_ipv4root | ( | uint32_t | bcast, | |
| size_t | nb, | |||
| struct vc_ip_mask_pair const * | ips | |||
| ) |
Sets the ipv4root information.
Sets the limits of resource.
| xid | The id of the context | |
| resource | The resource which will be queried | |
| lim | The new limits |
| int vc_syscall | ( | uint32_t | cmd, | |
| xid_t | xid, | |||
| void * | data | |||
| ) |
The generic vserver syscall.
This function executes the generic vserver syscall. It uses the correct syscallnumber (which may differ between the different architectures).
| cmd | the command to be executed | |
| xid | the xid on which the cmd shall be applied | |
| data | additional arguments; depends on cmd |
cmd; usually, -1 stands for an error | int vc_virt_stat | ( | xid_t | xid, | |
| struct vc_virt_stat * | stat | |||
| ) |
Get more statistics about a context.
| xid | The context to get stats about | |
| stat | Where to store the result |
1.5.1