/*
* Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
* Copyright (c) 2019, Ori Bernstein <ori@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* All code runs under the same UID but sensitive code paths are
* run in a separate process with tighter pledge(2) promises.
* Data is communicated between processes via imsg_flush(3) and imsg_read(3).
* This behaviour is transparent to users of the library.
*
* We generally transmit data in imsg buffers, split across several messages
* if necessary. File descriptors are used in cases where this is impractical,
* such as when accessing pack files or when transferring large blobs.
*
* We exec(2) after a fork(2). Parts of our library functionality are
* accessible via separate executables in a libexec directory.
*/
#define GOT_IMSG_FD_CHILD (STDERR_FILENO + 1)
#ifndef GOT_LIBEXECDIR
#define GOT_LIBEXECDIR /usr/libexec
#endif
/* Names of helper programs in libexec directory */
#define GOT_PROG_READ_OBJECT got-read-object
#define GOT_PROG_READ_TREE got-read-tree
#define GOT_PROG_READ_COMMIT got-read-commit
#define GOT_PROG_READ_BLOB got-read-blob
#define GOT_PROG_READ_TAG got-read-tag
#define GOT_PROG_READ_PACK got-read-pack
#define GOT_PROG_READ_GITCONFIG got-read-gitconfig
#define GOT_PROG_READ_GOTCONFIG got-read-gotconfig
#define GOT_PROG_FETCH_PACK got-fetch-pack
#define GOT_PROG_INDEX_PACK got-index-pack
#define GOT_PROG_SEND_PACK got-send-pack
#define GOT_STRINGIFY(x) #x
#define GOT_STRINGVAL(x) GOT_STRINGIFY(x)
/* Paths to helper programs in libexec directory */
#define GOT_PATH_PROG_READ_OBJECT \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_READ_OBJECT)
#define GOT_PATH_PROG_READ_TREE \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_READ_TREE)
#define GOT_PATH_PROG_READ_COMMIT \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_READ_COMMIT)
#define GOT_PATH_PROG_READ_BLOB \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_READ_BLOB)
#define GOT_PATH_PROG_READ_TAG \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_READ_TAG)
#define GOT_PATH_PROG_READ_PACK \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_READ_PACK)
#define GOT_PATH_PROG_READ_GITCONFIG \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_READ_GITCONFIG)
#define GOT_PATH_PROG_READ_GOTCONFIG \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_READ_GOTCONFIG)
#define GOT_PATH_PROG_FETCH_PACK \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_FETCH_PACK)
#define GOT_PATH_PROG_SEND_PACK \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_SEND_PACK)
#define GOT_PATH_PROG_INDEX_PACK \
GOT_STRINGVAL(GOT_LIBEXECDIR) "/" GOT_STRINGVAL(GOT_PROG_INDEX_PACK)
struct got_privsep_child {
int imsg_fd;
pid_t pid;
struct imsgbuf *ibuf;
};
enum got_imsg_type {
/* An error occured while processing a request. */
GOT_IMSG_ERROR,
/* Stop the child process. */
GOT_IMSG_STOP,
/*
* Messages concerned with read access to objects in a repository.
* Object and pack files are opened by the main process, where
* data may be read as a byte string but without any interpretation.
* Decompression and parsing of object and pack files occurs in a
* separate process which runs under pledge("stdio recvfd").
* This sandboxes our own repository parsing code, as well as zlib.
*/
GOT_IMSG_OBJECT_REQUEST,
GOT_IMSG_OBJECT,
GOT_IMSG_COMMIT_REQUEST,
GOT_IMSG_COMMIT,
GOT_IMSG_COMMIT_LOGMSG,
GOT_IMSG_TREE_REQUEST,
GOT_IMSG_TREE,
GOT_IMSG_TREE_ENTRY,
GOT_IMSG_BLOB_REQUEST,
GOT_IMSG_BLOB_OUTFD,
GOT_IMSG_BLOB,
GOT_IMSG_TAG_REQUEST,
GOT_IMSG_TAG,
GOT_IMSG_TAG_TAGMSG,
/* Messages related to networking. */
GOT_IMSG_FETCH_REQUEST,
GOT_IMSG_FETCH_HAVE_REF,
GOT_IMSG_FETCH_WANTED_BRANCH,
GOT_IMSG_FETCH_WANTED_REF,
GOT_IMSG_FETCH_OUTFD,
GOT_IMSG_FETCH_SYMREFS,
GOT_IMSG_FETCH_REF,
GOT_IMSG_FETCH_SERVER_PROGRESS,
GOT_IMSG_FETCH_DOWNLOAD_PROGRESS,
GOT_IMSG_FETCH_DONE,
GOT_IMSG_IDXPACK_REQUEST,
GOT_IMSG_IDXPACK_OUTFD,
GOT_IMSG_IDXPACK_PROGRESS,
GOT_IMSG_IDXPACK_DONE,
GOT_IMSG_SEND_REQUEST,
GOT_IMSG_SEND_REF,
GOT_IMSG_SEND_REMOTE_REF,
GOT_IMSG_SEND_REF_STATUS,
GOT_IMSG_SEND_PACK_REQUEST,
GOT_IMSG_SEND_PACKFD,
GOT_IMSG_SEND_UPLOAD_PROGRESS,
GOT_IMSG_SEND_DONE,
/* Messages related to pack files. */
GOT_IMSG_PACKIDX,
GOT_IMSG_PACK,
GOT_IMSG_PACKED_OBJECT_REQUEST,
GOT_IMSG_COMMIT_TRAVERSAL_REQUEST,
GOT_IMSG_TRAVERSED_COMMITS,
GOT_IMSG_COMMIT_TRAVERSAL_DONE,
/* Message sending file descriptor to a temporary file. */
GOT_IMSG_TMPFD,
/* Messages related to gitconfig files. */
GOT_IMSG_GITCONFIG_PARSE_REQUEST,
GOT_IMSG_GITCONFIG_REPOSITORY_FORMAT_VERSION_REQUEST,
GOT_IMSG_GITCONFIG_REPOSITORY_EXTENSIONS_REQUEST,
GOT_IMSG_GITCONFIG_AUTHOR_NAME_REQUEST,
GOT_IMSG_GITCONFIG_AUTHOR_EMAIL_REQUEST,
GOT_IMSG_GITCONFIG_REMOTES_REQUEST,
GOT_IMSG_GITCONFIG_INT_VAL,
GOT_IMSG_GITCONFIG_STR_VAL,
GOT_IMSG_GITCONFIG_REMOTES,
GOT_IMSG_GITCONFIG_REMOTE,
GOT_IMSG_GITCONFIG_OWNER_REQUEST,
GOT_IMSG_GITCONFIG_OWNER,
/* Messages related to gotconfig files. */
GOT_IMSG_GOTCONFIG_PARSE_REQUEST,
GOT_IMSG_GOTCONFIG_AUTHOR_REQUEST,
GOT_IMSG_GOTCONFIG_REMOTES_REQUEST,
GOT_IMSG_GOTCONFIG_INT_VAL,
GOT_IMSG_GOTCONFIG_STR_VAL,
GOT_IMSG_GOTCONFIG_REMOTES,
GOT_IMSG_GOTCONFIG_REMOTE,
/* Raw object access. Uncompress object data but do not parse it. */
GOT_IMSG_RAW_OBJECT_REQUEST,
GOT_IMSG_RAW_OBJECT_OUTFD,
GOT_IMSG_PACKED_RAW_OBJECT_REQUEST,
GOT_IMSG_RAW_OBJECT,
};
/* Structure for GOT_IMSG_ERROR. */
struct got_imsg_error {
int code; /* an error code from got_error.h */
int errno_code; /* in case code equals GOT_ERR_ERRNO */
} __attribute__((__packed__));
/*
* Structure for GOT_IMSG_TREE_REQUEST and GOT_IMSG_OBJECT data.
*/
struct got_imsg_object {
uint8_t id[SHA1_DIGEST_LENGTH];
/* These fields are the same as in struct got_object. */
int type;
int flags;
size_t hdrlen;
size_t size;
off_t pack_offset;
int pack_idx;
} __attribute__((__packed__));
/* Structure for GOT_IMSG_COMMIT data. */
struct got_imsg_commit_object {
uint8_t tree_id[SHA1_DIGEST_LENGTH];
size_t author_len;
time_t author_time;
time_t author_gmtoff;
size_t committer_len;
time_t committer_time;
time_t committer_gmtoff;
size_t logmsg_len;
int nparents;
/*
* Followed by author_len + committer_len data bytes
*/
/* Followed by 'nparents' SHA1_DIGEST_LENGTH length strings */
/*
* Followed by 'logmsg_len' bytes of commit log message data in
* one or more GOT_IMSG_COMMIT_LOGMSG messages.
*/
} __attribute__((__packed__));
/* Structure for GOT_IMSG_TREE_ENTRY. */
struct got_imsg_tree_entry {
char id[SHA1_DIGEST_LENGTH];
mode_t mode;
/* Followed by entry's name in remaining data of imsg buffer. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_TREE_OBJECT_REPLY data. */
struct got_imsg_tree_object {
int nentries; /* This many TREE_ENTRY messages follow. */
};
/* Structure for GOT_IMSG_BLOB. */
struct got_imsg_blob {
size_t size;
size_t hdrlen;
/*
* If size <= GOT_PRIVSEP_INLINE_BLOB_DATA_MAX, blob data follows
* in the imsg buffer. Otherwise, blob data has been written to a
* file descriptor passed via the GOT_IMSG_BLOB_OUTFD imsg.
*/
#define GOT_PRIVSEP_INLINE_BLOB_DATA_MAX \
(MAX_IMSGSIZE - IMSG_HEADER_SIZE - sizeof(struct got_imsg_blob))
};
/* Structure for GOT_IMSG_RAW_OBJECT. */
struct got_imsg_raw_obj {
off_t size;
size_t hdrlen;
/*
* If size <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX, object data follows
* in the imsg buffer. Otherwise, object data has been written to a
* file descriptor passed via the GOT_IMSG_RAW_OBJECT_OUTFD imsg.
*/
#define GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX \
(MAX_IMSGSIZE - IMSG_HEADER_SIZE - sizeof(struct got_imsg_raw_obj))
};
/* Structure for GOT_IMSG_TAG data. */
struct got_imsg_tag_object {
uint8_t id[SHA1_DIGEST_LENGTH];
int obj_type;
size_t tag_len;
size_t tagger_len;
time_t tagger_time;
time_t tagger_gmtoff;
size_t tagmsg_len;
/*
* Followed by tag_len + tagger_len data bytes
*/
/*
* Followed by 'tagmsg_len' bytes of tag message data in
* one or more GOT_IMSG_TAG_TAGMSG messages.
*/
} __attribute__((__packed__));
/* Structure for GOT_IMSG_FETCH_HAVE_REF data. */
struct got_imsg_fetch_have_ref {
uint8_t id[SHA1_DIGEST_LENGTH];
size_t name_len;
/* Followed by name_len data bytes. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_FETCH_WANTED_BRANCH data. */
struct got_imsg_fetch_wanted_branch {
size_t name_len;
/* Followed by name_len data bytes. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_FETCH_WANTED_REF data. */
struct got_imsg_fetch_wanted_ref {
size_t name_len;
/* Followed by name_len data bytes. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_FETCH_REQUEST data. */
struct got_imsg_fetch_request {
int fetch_all_branches;
int list_refs_only;
int verbosity;
size_t n_have_refs;
size_t n_wanted_branches;
size_t n_wanted_refs;
/* Followed by n_have_refs GOT_IMSG_FETCH_HAVE_REF messages. */
/* Followed by n_wanted_branches times GOT_IMSG_FETCH_WANTED_BRANCH. */
/* Followed by n_wanted_refs times GOT_IMSG_FETCH_WANTED_REF. */
} __attribute__((__packed__));
/* Structures for GOT_IMSG_FETCH_SYMREFS data. */
struct got_imsg_fetch_symref {
size_t name_len;
size_t target_len;
/*
* Followed by name_len + target_len data bytes.
*/
} __attribute__((__packed__));
struct got_imsg_fetch_symrefs {
size_t nsymrefs;
/* Followed by nsymrefs times of got_imsg_fetch_symref data. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_FETCH_REF data. */
struct got_imsg_fetch_ref {
/* Describes a reference which will be fetched. */
uint8_t refid[SHA1_DIGEST_LENGTH];
/* Followed by reference name in remaining data of imsg buffer. */
};
/* Structure for GOT_IMSG_FETCH_DOWNLOAD_PROGRESS data. */
struct got_imsg_fetch_download_progress {
/* Number of packfile data bytes downloaded so far. */
off_t packfile_bytes;
};
/* Structure for GOT_IMSG_SEND_REQUEST data. */
struct got_imsg_send_request {
int verbosity;
size_t nrefs;
/* Followed by nrefs GOT_IMSG_SEND_REF messages. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_SEND_UPLOAD_PROGRESS data. */
struct got_imsg_send_upload_progress {
/* Number of packfile data bytes uploaded so far. */
off_t packfile_bytes;
};
/* Structure for GOT_IMSG_SEND_REF data. */
struct got_imsg_send_ref {
uint8_t id[SHA1_DIGEST_LENGTH];
int delete;
size_t name_len;
/* Followed by name_len data bytes. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_SEND_REMOTE_REF data. */
struct got_imsg_send_remote_ref {
uint8_t id[SHA1_DIGEST_LENGTH];
size_t name_len;
/* Followed by name_len data bytes. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_SEND_REF_STATUS data. */
struct got_imsg_send_ref_status {
int success;
size_t name_len;
/* Followed by name_len data bytes. */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_IDXPACK_REQUEST data. */
struct got_imsg_index_pack_request {
uint8_t pack_hash[SHA1_DIGEST_LENGTH];
} __attribute__((__packed__));
/* Structure for GOT_IMSG_IDXPACK_PROGRESS data. */
struct got_imsg_index_pack_progress {
/* Total number of objects in pack file. */
int nobj_total;
/* Number of objects indexed so far. */
int nobj_indexed;
/* Number of non-deltified objects in pack file. */
int nobj_loose;
/* Number of deltified objects resolved so far. */
int nobj_resolved;
};
/* Structure for GOT_IMSG_PACKIDX. */
struct got_imsg_packidx {
size_t len;
off_t packfile_size;
/* Additionally, a file desciptor is passed via imsg. */
};
/* Structure for GOT_IMSG_PACK. */
struct got_imsg_pack {
char path_packfile[PATH_MAX];
size_t filesize;
/* Additionally, a file desciptor is passed via imsg. */
} __attribute__((__packed__));
/*
* Structure for GOT_IMSG_OBJECT_REQUEST, GOT_IMSG_BLOB_REQUEST,
* GOT_IMSG_TREE_REQUEST, GOT_IMSG_COMMIT_REQUEST, and
* GOT_IMSG_TAG_REQUEST data.
*/
struct got_object_id;
/*
* Structure for GOT_IMSG_PACKED_OBJECT_REQUEST and
* GOT_IMSG_PACKED_RAW_OBJECT_REQUEST data.
*/
struct got_imsg_packed_object {
uint8_t id[SHA1_DIGEST_LENGTH];
int idx;
} __attribute__((__packed__));
/* Structure for GOT_IMSG_COMMIT_TRAVERSAL_REQUEST */
struct got_imsg_commit_traversal_request {
uint8_t id[SHA1_DIGEST_LENGTH];
int idx;
size_t path_len;
/* Followed by path_len bytes of path data */
} __attribute__((__packed__));
/* Structure for GOT_IMSG_TRAVERSED_COMMITS */
struct got_imsg_traversed_commits {
size_t ncommits;
/* Followed by ncommit IDs of SHA1_DIGEST_LENGTH each */
} __attribute__((__packed__));
/*
* Structure for GOT_IMSG_GOTCONFIG_REMOTE and
* GOT_IMSG_GOTCONFIG_REMOTE data.
*/
struct got_imsg_remote {
size_t name_len;
size_t fetch_url_len;
size_t send_url_len;
int mirror_references;
int fetch_all_branches;
int nfetch_branches;
int nsend_branches;
int nfetch_refs;
/* Followed by name_len data bytes. */
/* Followed by fetch_url_len + send_url_len data bytes. */
/* Followed by nfetch_branches GOT_IMSG_GITCONFIG_STR_VAL messages. */
/* Followed by nsend_branches GOT_IMSG_GITCONFIG_STR_VAL messages. */
/* Followed by nfetch_refs GOT_IMSG_GITCONFIG_STR_VAL messages. */
} __attribute__((__packed__));
/*
* Structure for GOT_IMSG_GITCONFIG_REMOTES data.
*/
struct got_imsg_remotes {
int nremotes; /* This many GOT_IMSG_GITCONFIG_REMOTE messages follow. */
};
struct got_remote_repo;
struct got_pack;
struct got_packidx;
struct got_pathlist_head;
const struct got_error *got_send_ack(pid_t);
const struct got_error *got_privsep_wait_for_child(pid_t);
const struct got_error *got_privsep_flush_imsg(struct imsgbuf *);
const struct got_error *got_privsep_send_stop(int);
const struct got_error *got_privsep_recv_imsg(struct imsg *, struct imsgbuf *,
size_t);
void got_privsep_send_error(struct imsgbuf *, const struct got_error *);
const struct got_error *got_privsep_send_ack(struct imsgbuf *);
const struct got_error *got_privsep_wait_ack(struct imsgbuf *);
const struct got_error *got_privsep_send_obj_req(struct imsgbuf *, int,
struct got_object_id *);
const struct got_error *got_privsep_send_raw_obj_req(struct imsgbuf *, int,
struct got_object_id *);
const struct got_error *got_privsep_send_raw_obj_outfd(struct imsgbuf *, int);
const struct got_error *got_privsep_send_commit_req(struct imsgbuf *, int,
struct got_object_id *, int);
const struct got_error *got_privsep_send_tree_req(struct imsgbuf *, int,
struct got_object_id *, int);
const struct got_error *got_privsep_send_tag_req(struct imsgbuf *, int,
struct got_object_id *, int);
const struct got_error *got_privsep_send_blob_req(struct imsgbuf *, int,
struct got_object_id *, int);
const struct got_error *got_privsep_send_blob_outfd(struct imsgbuf *, int);
const struct got_error *got_privsep_send_tmpfd(struct imsgbuf *, int);
const struct got_error *got_privsep_send_obj(struct imsgbuf *,
struct got_object *);
const struct got_error *got_privsep_send_index_pack_req(struct imsgbuf *,
uint8_t *, int);
const struct got_error *got_privsep_send_index_pack_outfd(struct imsgbuf *,
int);
const struct got_error *got_privsep_recv_index_progress(int *, int *, int *,
int *, int *, struct imsgbuf *ibuf);
const struct got_error *got_privsep_send_fetch_req(struct imsgbuf *, int,
struct got_pathlist_head *, int, struct got_pathlist_head *,
struct got_pathlist_head *, int, int);
const struct got_error *got_privsep_send_fetch_outfd(struct imsgbuf *, int);
const struct got_error *got_privsep_recv_fetch_progress(int *,
struct got_object_id **, char **, struct got_pathlist_head *, char **,
off_t *, uint8_t *, struct imsgbuf *);
const struct got_error *got_privsep_send_send_req(struct imsgbuf *, int,
struct got_pathlist_head *, struct got_pathlist_head *, int);
const struct got_error *got_privsep_recv_send_remote_refs(
struct got_pathlist_head *, struct imsgbuf *);
const struct got_error *got_privsep_send_packfd(struct imsgbuf *, int);
const struct got_error *got_privsep_recv_send_progress(int *, off_t *,
int *, char **, struct imsgbuf *);
const struct got_error *got_privsep_get_imsg_obj(struct got_object **,
struct imsg *, struct imsgbuf *);
const struct got_error *got_privsep_recv_obj(struct got_object **,
struct imsgbuf *);
const struct got_error *got_privsep_send_raw_obj(struct imsgbuf *, off_t,
size_t, uint8_t *);
const struct got_error *got_privsep_recv_raw_obj(uint8_t **, off_t *, size_t *,
struct imsgbuf *);
const struct got_error *got_privsep_send_commit(struct imsgbuf *,
struct got_commit_object *);
const struct got_error *got_privsep_recv_commit(struct got_commit_object **,
struct imsgbuf *);
const struct got_error *got_privsep_recv_tree(struct got_tree_object **,
struct imsgbuf *);
const struct got_error *got_privsep_send_tree(struct imsgbuf *,
struct got_pathlist_head *, int);
const struct got_error *got_privsep_send_blob(struct imsgbuf *, size_t, size_t,
const uint8_t *);
const struct got_error *got_privsep_recv_blob(uint8_t **, size_t *, size_t *,
struct imsgbuf *);
const struct got_error *got_privsep_send_tag(struct imsgbuf *,
struct got_tag_object *);
const struct got_error *got_privsep_recv_tag(struct got_tag_object **,
struct imsgbuf *);
const struct got_error *got_privsep_init_pack_child(struct imsgbuf *,
struct got_pack *, struct got_packidx *);
const struct got_error *got_privsep_send_packed_obj_req(struct imsgbuf *, int,
struct got_object_id *);
const struct got_error *got_privsep_send_packed_raw_obj_req(struct imsgbuf *,
int, struct got_object_id *);
const struct got_error *got_privsep_send_pack_child_ready(struct imsgbuf *);
const struct got_error *got_privsep_send_gitconfig_parse_req(struct imsgbuf *,
int);
const struct got_error *
got_privsep_send_gitconfig_repository_format_version_req(struct imsgbuf *);
const struct got_error *got_privsep_send_gitconfig_repository_extensions_req(
struct imsgbuf *);
const struct got_error *got_privsep_send_gitconfig_author_name_req(
struct imsgbuf *);
const struct got_error *got_privsep_send_gitconfig_author_email_req(
struct imsgbuf *);
const struct got_error *got_privsep_send_gitconfig_remotes_req(
struct imsgbuf *);
const struct got_error *got_privsep_send_gitconfig_owner_req(struct imsgbuf *);
const struct got_error *got_privsep_recv_gitconfig_str(char **,
struct imsgbuf *);
const struct got_error *got_privsep_recv_gitconfig_int(int *, struct imsgbuf *);
const struct got_error *got_privsep_recv_gitconfig_remotes(
struct got_remote_repo **, int *, struct imsgbuf *);
const struct got_error *got_privsep_send_gotconfig_parse_req(struct imsgbuf *,
int);
const struct got_error *got_privsep_send_gotconfig_author_req(struct imsgbuf *);
const struct got_error *got_privsep_send_gotconfig_remotes_req(
struct imsgbuf *);
const struct got_error *got_privsep_recv_gotconfig_str(char **,
struct imsgbuf *);
const struct got_error *got_privsep_recv_gotconfig_remotes(
struct got_remote_repo **, int *, struct imsgbuf *);
const struct got_error *got_privsep_send_commit_traversal_request(
struct imsgbuf *, struct got_object_id *, int, const char *);
const struct got_error *got_privsep_recv_traversed_commits(
struct got_commit_object **, struct got_object_id **,
struct got_object_id_queue *, struct imsgbuf *);
void got_privsep_exec_child(int[2], const char *, const char *);
