diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/basic/cgroup-util.c | 60 | ||||
| -rw-r--r-- | src/core/main.c | 2 |
2 files changed, 37 insertions, 25 deletions
diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c index 1eed26d7bd..b9b27862ff 100644 --- a/src/basic/cgroup-util.c +++ b/src/basic/cgroup-util.c @@ -29,7 +29,6 @@ #include <sys/types.h> #include <ftw.h> -#include "cgroup-util.h" #include "set.h" #include "macro.h" #include "util.h" @@ -41,6 +40,7 @@ #include "special.h" #include "mkdir.h" #include "login-util.h" +#include "cgroup-util.h" int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) { _cleanup_free_ char *fs = NULL; @@ -197,7 +197,7 @@ int cg_kill(const char *controller, const char *path, int sig, bool sigcont, boo ret = -errno; } else { if (sigcont && sig != SIGKILL) - kill(pid, SIGCONT); + (void) kill(pid, SIGCONT); if (ret == 0) ret = 1; @@ -233,7 +233,7 @@ int cg_kill(const char *controller, const char *path, int sig, bool sigcont, boo int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool rem, Set *s) { _cleanup_set_free_ Set *allocated_set = NULL; _cleanup_closedir_ DIR *d = NULL; - int r, ret = 0; + int r, ret; char *fn; assert(path); @@ -264,7 +264,7 @@ int cg_kill_recursive(const char *controller, const char *path, int sig, bool si return -ENOMEM; r = cg_kill_recursive(controller, p, sig, sigcont, ignore_self, rem, s); - if (ret >= 0 && r != 0) + if (r != 0 && ret >= 0) ret = r; } @@ -390,12 +390,8 @@ int cg_migrate_recursive( p = strjoin(pfrom, "/", fn, NULL); free(fn); - if (!p) { - if (ret >= 0) - return -ENOMEM; - - return ret; - } + if (!p) + return -ENOMEM; r = cg_migrate_recursive(cfrom, p, cto, pto, ignore_self, rem); if (r != 0 && ret >= 0) @@ -436,13 +432,15 @@ int cg_migrate_recursive_fallback( /* This didn't work? Then let's try all prefixes of the destination */ PATH_FOREACH_PREFIX(prefix, pto) { - r = cg_migrate_recursive(cfrom, pfrom, cto, prefix, ignore_self, rem); - if (r >= 0) - break; + int q; + + q = cg_migrate_recursive(cfrom, pfrom, cto, prefix, ignore_self, rem); + if (q >= 0) + return q; } } - return 0; + return r; } static const char *normalize_controller(const char *controller) { @@ -557,7 +555,7 @@ static int trim_cb(const char *path, const struct stat *sb, int typeflag, struct if (ftwbuf->level < 1) return 0; - rmdir(path); + (void) rmdir(path); return 0; } @@ -572,8 +570,14 @@ int cg_trim(const char *controller, const char *path, bool delete_root) { return r; errno = 0; - if (nftw(fs, trim_cb, 64, FTW_DEPTH|FTW_MOUNT|FTW_PHYS) != 0) - r = errno ? -errno : -EIO; + if (nftw(fs, trim_cb, 64, FTW_DEPTH|FTW_MOUNT|FTW_PHYS) != 0) { + if (errno == ENOENT) + r = 0; + else if (errno != 0) + r = -errno; + else + r = -EIO; + } if (delete_root) { if (rmdir(fs) < 0 && errno != ENOENT) @@ -672,13 +676,15 @@ int cg_attach_fallback(const char *controller, const char *path, pid_t pid) { * the destination */ PATH_FOREACH_PREFIX(prefix, path) { - r = cg_attach(controller, prefix, pid); - if (r >= 0) - break; + int q; + + q = cg_attach(controller, prefix, pid); + if (q >= 0) + return q; } } - return 0; + return r; } int cg_set_group_access( @@ -691,7 +697,8 @@ int cg_set_group_access( _cleanup_free_ char *fs = NULL; int r; - assert(path); + if (mode == MODE_INVALID && uid == UID_INVALID && gid == GID_INVALID) + return 0; if (mode != MODE_INVALID) mode &= 0777; @@ -827,7 +834,7 @@ int cg_install_release_agent(const char *controller, const char *agent) { return r; sc = strstrip(contents); - if (sc[0] == 0) { + if (isempty(sc)) { r = write_string_file(fs, agent, 0); if (r < 0) return r; @@ -1877,6 +1884,11 @@ int cg_kernel_controllers(Set *controllers) { assert(controllers); + /* Determines the full list of kernel-known controllers. Might + * include controllers we don't actually support, arbitrary + * named hierarchies and controllers that aren't currently + * accessible (because not mounted). */ + f = fopen("/proc/cgroups", "re"); if (!f) { if (errno == ENOENT) @@ -1897,7 +1909,7 @@ int cg_kernel_controllers(Set *controllers) { if (feof(f)) break; - if (ferror(f) && errno) + if (ferror(f) && errno != 0) return -errno; return -EBADMSG; diff --git a/src/core/main.c b/src/core/main.c index e232be88c0..f29a595097 100644 --- a/src/core/main.c +++ b/src/core/main.c @@ -2043,7 +2043,7 @@ finish: * kernel; at this point, we will not listen to the * signals anyway */ if (detect_container(NULL) <= 0) - cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER); + (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER); execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block); log_error_errno(errno, "Failed to execute shutdown binary, %s: %m", |