411daeaa53
The setuid/setgid syscalls requires root capabilities but if the kernel supports unprivileged user namespace then the child process has the full set of capabilities in the new namespace, then we can allow setting "user" and "group" in such cases (this is a common security use case). Tests were added to ensure user gets meaningful error messages for uid/gid mapping misconfigurations.
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) NGINX, Inc.
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*/
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#ifndef _NXT_CLONE_INCLUDED_
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#define _NXT_CLONE_INCLUDED_
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#if (NXT_HAVE_CLONE_NEWUSER)
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typedef struct {
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nxt_int_t container;
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nxt_int_t host;
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nxt_int_t size;
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} nxt_clone_map_entry_t;
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typedef struct {
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nxt_uint_t size;
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nxt_clone_map_entry_t *map;
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} nxt_clone_credential_map_t;
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#endif
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typedef struct {
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nxt_int_t flags;
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#if (NXT_HAVE_CLONE_NEWUSER)
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nxt_clone_credential_map_t uidmap;
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nxt_clone_credential_map_t gidmap;
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#endif
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} nxt_clone_t;
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pid_t nxt_clone(nxt_int_t flags);
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#if (NXT_HAVE_CLONE_NEWUSER)
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#define NXT_CLONE_USER(flags) \
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((flags & CLONE_NEWUSER) == CLONE_NEWUSER)
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NXT_EXPORT nxt_int_t nxt_clone_credential_map(nxt_task_t *task, pid_t pid,
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nxt_credential_t *creds, nxt_clone_t *clone);
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NXT_EXPORT nxt_int_t nxt_clone_vldt_credential_uidmap(nxt_task_t *task,
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nxt_clone_credential_map_t *map, nxt_credential_t *creds);
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NXT_EXPORT nxt_int_t nxt_clone_vldt_credential_gidmap(nxt_task_t *task,
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nxt_clone_credential_map_t *map, nxt_credential_t *creds);
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#endif
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#endif /* _NXT_CLONE_INCLUDED_ */
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