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Merge pull request #36222 from yongtang/02062018-runc

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Update runc to 6c55f98695e902427906eed2c799e566e3d3dfb5
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Yong Tang 2018-02-13 12:40:35 -08:00 committed by GitHub
commit 5eb2f98a35
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 55 additions and 56 deletions
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2
hack/dockerfile/binaries-commits
View file

@ -3,7 +3,7 @@
TOMLV_COMMIT=9baf8a8a9f2ed20a8e54160840c492f937eeaf9a
# When updating RUNC_COMMIT, also update runc in vendor.conf accordingly
RUNC_COMMIT=9f9c96235cc97674e935002fc3d78361b696a69e
RUNC_COMMIT=6c55f98695e902427906eed2c799e566e3d3dfb5
# containerd is also pinned in vendor.conf. When updating the binary
# version you may also need to update the vendor version to pick up bug

2
vendor.conf
View file

@ -66,7 +66,7 @@ github.com/pborman/uuid v1.0
google.golang.org/grpc v1.3.0
# When updating, also update RUNC_COMMIT in hack/dockerfile/binaries-commits accordingly
github.com/opencontainers/runc 9f9c96235cc97674e935002fc3d78361b696a69e
github.com/opencontainers/runc 6c55f98695e902427906eed2c799e566e3d3dfb5
github.com/opencontainers/runtime-spec v1.0.1
github.com/opencontainers/image-spec v1.0.1
github.com/seccomp/libseccomp-golang 32f571b70023028bd57d9288c20efbcb237f3ce0

107
vendor/github.com/opencontainers/runc/libcontainer/nsenter/nsexec.c generated vendored
View file

@ -22,7 +22,6 @@
#include <sys/types.h>
#include <sys/wait.h>
#include <linux/limits.h>
#include <linux/netlink.h>
#include <linux/types.h>
@ -32,15 +31,15 @@
/* Synchronisation values. */
enum sync_t {
SYNC_USERMAP_PLS = 0x40, /* Request parent to map our users. */
SYNC_USERMAP_ACK = 0x41, /* Mapping finished by the parent. */
SYNC_RECVPID_PLS = 0x42, /* Tell parent we're sending the PID. */
SYNC_RECVPID_ACK = 0x43, /* PID was correctly received by parent. */
SYNC_GRANDCHILD = 0x44, /* The grandchild is ready to run. */
SYNC_CHILD_READY = 0x45, /* The child or grandchild is ready to return. */
SYNC_USERMAP_PLS = 0x40, /* Request parent to map our users. */
SYNC_USERMAP_ACK = 0x41, /* Mapping finished by the parent. */
SYNC_RECVPID_PLS = 0x42, /* Tell parent we're sending the PID. */
SYNC_RECVPID_ACK = 0x43, /* PID was correctly received by parent. */
SYNC_GRANDCHILD = 0x44, /* The grandchild is ready to run. */
SYNC_CHILD_READY = 0x45, /* The child or grandchild is ready to return. */
/* XXX: This doesn't help with segfaults and other such issues. */
SYNC_ERR = 0xFF, /* Fatal error, no turning back. The error code follows. */
SYNC_ERR = 0xFF, /* Fatal error, no turning back. The error code follows. */
};
/* longjmp() arguments. */
@ -73,7 +72,7 @@ struct nlconfig_t {
char *oom_score_adj;
size_t oom_score_adj_len;
/* User namespace settings.*/
/* User namespace settings. */
char *uidmap;
size_t uidmap_len;
char *gidmap;
@ -82,7 +81,7 @@ struct nlconfig_t {
size_t namespaces_len;
uint8_t is_setgroup;
/* Rootless container settings.*/
/* Rootless container settings. */
uint8_t is_rootless;
char *uidmappath;
size_t uidmappath_len;
@ -167,7 +166,7 @@ static int write_file(char *data, size_t data_len, char *pathfmt, ...)
goto out;
}
out:
out:
close(fd);
return ret;
}
@ -184,16 +183,16 @@ static void update_setgroups(int pid, enum policy_t setgroup)
char *policy;
switch (setgroup) {
case SETGROUPS_ALLOW:
policy = "allow";
break;
case SETGROUPS_DENY:
policy = "deny";
break;
case SETGROUPS_DEFAULT:
default:
/* Nothing to do. */
return;
case SETGROUPS_ALLOW:
policy = "allow";
break;
case SETGROUPS_DENY:
policy = "deny";
break;
case SETGROUPS_DEFAULT:
default:
/* Nothing to do. */
return;
}
if (write_file(policy, strlen(policy), "/proc/%d/setgroups", pid) < 0) {
@ -226,14 +225,14 @@ static int try_mapping_tool(const char *app, int pid, char *map, size_t map_len)
if (!child) {
#define MAX_ARGV 20
char *argv[MAX_ARGV];
char *envp[] = {NULL};
char *envp[] = { NULL };
char pid_fmt[16];
int argc = 0;
char *next;
snprintf(pid_fmt, 16, "%d", pid);
argv[argc++] = (char *) app;
argv[argc++] = (char *)app;
argv[argc++] = pid_fmt;
/*
* Convert the map string into a list of argument that
@ -319,7 +318,7 @@ static int clone_parent(jmp_buf *env, int jmpval) __attribute__ ((noinline));
static int clone_parent(jmp_buf *env, int jmpval)
{
struct clone_t ca = {
.env = env,
.env = env,
.jmpval = jmpval,
};
@ -533,7 +532,7 @@ void nsexec(void)
int pipenum;
jmp_buf env;
int sync_child_pipe[2], sync_grandchild_pipe[2];
struct nlconfig_t config = {0};
struct nlconfig_t config = { 0 };
/*
* If we don't have an init pipe, just return to the go routine.
@ -630,21 +629,21 @@ void nsexec(void)
*/
switch (setjmp(env)) {
/*
* Stage 0: We're in the parent. Our job is just to create a new child
* (stage 1: JUMP_CHILD) process and write its uid_map and
* gid_map. That process will go on to create a new process, then
* it will send us its PID which we will send to the bootstrap
* process.
*/
case JUMP_PARENT: {
/*
* Stage 0: We're in the parent. Our job is just to create a new child
* (stage 1: JUMP_CHILD) process and write its uid_map and
* gid_map. That process will go on to create a new process, then
* it will send us its PID which we will send to the bootstrap
* process.
*/
case JUMP_PARENT:{
int len;
pid_t child, first_child = -1;
char buf[JSON_MAX];
bool ready = false;
/* For debugging. */
prctl(PR_SET_NAME, (unsigned long) "runc:[0:PARENT]", 0, 0, 0);
prctl(PR_SET_NAME, (unsigned long)"runc:[0:PARENT]", 0, 0, 0);
/* Start the process of getting a container. */
child = clone_parent(&env, JUMP_CHILD);
@ -702,7 +701,7 @@ void nsexec(void)
bail("failed to sync with child: write(SYNC_USERMAP_ACK)");
}
break;
case SYNC_RECVPID_PLS: {
case SYNC_RECVPID_PLS:{
first_child = child;
/* Get the init_func pid. */
@ -781,16 +780,16 @@ void nsexec(void)
exit(0);
}
/*
* Stage 1: We're in the first child process. Our job is to join any
* provided namespaces in the netlink payload and unshare all
* of the requested namespaces. If we've been asked to
* CLONE_NEWUSER, we will ask our parent (stage 0) to set up
* our user mappings for us. Then, we create a new child
* (stage 2: JUMP_INIT) for PID namespace. We then send the
* child's PID to our parent (stage 0).
*/
case JUMP_CHILD: {
/*
* Stage 1: We're in the first child process. Our job is to join any
* provided namespaces in the netlink payload and unshare all
* of the requested namespaces. If we've been asked to
* CLONE_NEWUSER, we will ask our parent (stage 0) to set up
* our user mappings for us. Then, we create a new child
* (stage 2: JUMP_INIT) for PID namespace. We then send the
* child's PID to our parent (stage 0).
*/
case JUMP_CHILD:{
pid_t child;
enum sync_t s;
@ -799,7 +798,7 @@ void nsexec(void)
close(sync_child_pipe[1]);
/* For debugging. */
prctl(PR_SET_NAME, (unsigned long) "runc:[1:CHILD]", 0, 0, 0);
prctl(PR_SET_NAME, (unsigned long)"runc:[1:CHILD]", 0, 0, 0);
/*
* We need to setns first. We cannot do this earlier (in stage 0)
@ -901,13 +900,13 @@ void nsexec(void)
exit(0);
}
/*
* Stage 2: We're the final child process, and the only process that will
* actually return to the Go runtime. Our job is to just do the
* final cleanup steps and then return to the Go runtime to allow
* init_linux.go to run.
*/
case JUMP_INIT: {
/*
* Stage 2: We're the final child process, and the only process that will
* actually return to the Go runtime. Our job is to just do the
* final cleanup steps and then return to the Go runtime to allow
* init_linux.go to run.
*/
case JUMP_INIT:{
/*
* We're inside the child now, having jumped from the
* start_child() code after forking in the parent.
@ -921,7 +920,7 @@ void nsexec(void)
close(sync_child_pipe[1]);
/* For debugging. */
prctl(PR_SET_NAME, (unsigned long) "runc:[2:INIT]", 0, 0, 0);
prctl(PR_SET_NAME, (unsigned long)"runc:[2:INIT]", 0, 0, 0);
if (read(syncfd, &s, sizeof(s)) != sizeof(s))
bail("failed to sync with parent: read(SYNC_GRANDCHILD)");