thodg/got/include/got_error.h

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  Commit

• Author : Stefan Sperling
  Date : 2018-04-27 11:25:46
  Hash : 0c048b15
  Message : offsets in pack files should not make us seek beyond EOF

• include/got_error.h

• /*
   * Copyright (c) 2018 Stefan Sperling <stsp@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.
   */
  
  /* Error codes */
  #define GOT_ERR_OK		0
  #define GOT_ERR_ERRNO		1
  #define GOT_ERR_NOT_GIT_REPO	2
  #define GOT_ERR_NOT_ABSPATH	3
  #define GOT_ERR_BAD_PATH	4
  #define GOT_ERR_NOT_REF		5
  #define GOT_ERR_IO		6
  #define GOT_ERR_EOF		7
  #define GOT_ERR_DECOMPRESSION	8
  #define GOT_ERR_NO_SPACE	9
  #define GOT_ERR_BAD_OBJ_HDR	10
  #define GOT_ERR_OBJ_TYPE	11
  #define GOT_ERR_BAD_OBJ_DATA	12
  #define GOT_ERR_FILE_OPEN	13
  #define GOT_ERR_BAD_PACKIDX	14
  #define GOT_ERR_PACKIDX_CSUM	15
  #define GOT_ERR_BAD_PACKFILE	16
  #define GOT_ERR_NO_OBJ		17
  #define GOT_ERR_NOT_IMPL	18
  #define GOT_ERR_OBJ_NOT_PACKED	19
  #define GOT_ERR_BAD_DELTA_CHAIN	20
  #define GOT_ERR_BAD_DELTA	21
  #define GOT_ERR_COMPRESSION	22
  #define GOT_ERR_BAD_OBJ_ID_STR	23
  #define GOT_ERR_WORKTREE_EXISTS	26
  #define GOT_ERR_WORKTREE_META	27
  #define GOT_ERR_WORKTREE_VERS	28
  #define GOT_ERR_WORKTREE_BUSY	29
  #define GOT_ERR_DIR_OBSTRUCTED	30
  #define GOT_ERR_FILE_OBSTRUCTED	31
  #define GOT_ERR_RECURSION	32
  #define GOT_ERR_TIMEOUT		33
  #define GOT_ERR_INTERRUPT	34
  #define GOT_ERR_PRIVSEP_READ	35
  #define GOT_ERR_PRIVSEP_LEN	36
  #define GOT_ERR_PRIVSEP_PIPE	37
  #define GOT_ERR_PRIVSEP_NO_FD	38
  #define GOT_ERR_PRIVSEP_MSG	39
  #define GOT_ERR_PRIVSEP_DIED	40
  #define GOT_ERR_PRIVSEP_EXIT	41
  #define GOT_ERR_PACK_OFFSET	42
  
  static const struct got_error {
  	int code;
  	const char *msg;
  } got_errors[] = {
  	{ GOT_ERR_OK,		"no error occured?!?" },
  	{ GOT_ERR_ERRNO,	"see errno" },
  	{ GOT_ERR_NOT_GIT_REPO, "no git repository found" },
  	{ GOT_ERR_NOT_ABSPATH,	"absolute path expected" },
  	{ GOT_ERR_BAD_PATH,	"bad path" },
  	{ GOT_ERR_NOT_REF,	"no such reference found" },
  	{ GOT_ERR_IO,		"input/output error" },
  	{ GOT_ERR_EOF,		"unexpected end of file" },
  	{ GOT_ERR_DECOMPRESSION,"decompression failed" },
  	{ GOT_ERR_NO_SPACE,	"buffer too small" },
  	{ GOT_ERR_BAD_OBJ_HDR,	"bad object header" },
  	{ GOT_ERR_OBJ_TYPE,	"wrong type of object" },
  	{ GOT_ERR_BAD_OBJ_DATA,	"bad object data" },
  	{ GOT_ERR_FILE_OPEN,	"could not open file" },
  	{ GOT_ERR_BAD_PACKIDX,	"bad pack index file" },
  	{ GOT_ERR_PACKIDX_CSUM, "pack index file checksum error" },
  	{ GOT_ERR_BAD_PACKFILE,	"bad pack file" },
  	{ GOT_ERR_NO_OBJ,	"object not found" },
  	{ GOT_ERR_NOT_IMPL,	"feature not implemented" },
  	{ GOT_ERR_OBJ_NOT_PACKED,"object is not packed" },
  	{ GOT_ERR_BAD_DELTA_CHAIN,"bad delta chain" },
  	{ GOT_ERR_BAD_DELTA,	"bad delta" },
  	{ GOT_ERR_COMPRESSION,	"compression failed" },
  	{ GOT_ERR_BAD_OBJ_ID_STR,"bad object id string" },
  	{ GOT_ERR_WORKTREE_EXISTS,"worktree already exists" },
  	{ GOT_ERR_WORKTREE_META,"bad worktree meta data" },
  	{ GOT_ERR_WORKTREE_VERS,"unsupported worktree format version" },
  	{ GOT_ERR_WORKTREE_BUSY,"worktree already locked" },
  	{ GOT_ERR_RECURSION,	"recursion limit reached" },
  	{ GOT_ERR_TIMEOUT,	"operation timed out" },
  	{ GOT_ERR_INTERRUPT,	"operation interrupted" },
  	{ GOT_ERR_PRIVSEP_READ,	"no data received from unprivileged process" },
  	{ GOT_ERR_PRIVSEP_LEN,	"unexpected amount of data received "
  				"from unprivileged process" },
  	{ GOT_ERR_PRIVSEP_PIPE,	"unprivileged process closed pipe" },
  	{ GOT_ERR_PRIVSEP_NO_FD,"out of file descriptors for privsep" },
  	{ GOT_ERR_PRIVSEP_MSG,"unexpected message from unprivileged process" },
  	{ GOT_ERR_PRIVSEP_DIED,"unprivileged process died unexpectedly" },
  	{ GOT_ERR_PRIVSEP_EXIT,"bad exit code from unprivileged process" },
  	{ GOT_ERR_PACK_OFFSET,"bad offset in pack file" },
  };
  
  /*
   * Get an error object from the above list, for a given error code.
   * The error message is fixed.
   */
  const struct got_error *got_error(int);
  
  /*
   * Get a statically allocated error object with code GOT_ERR_ERRNO
   * and an error message obtained from strerror(3).
   */
  const struct got_error *got_error_from_errno(void);
  
  /*
   * If ferror(3) indicates an error status for the FILE, obtain an error
   * from got_error_from_errno(). Else, obtain the error via got_error()
   * with the error code provided in the second argument.
   */
  const struct got_error *got_ferror(FILE *, int);