mirror of
https://github.com/fernandotcl/TinyEMU.git
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96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/*
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* Misc FS utilities
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*
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* Copyright (c) 2016-2017 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#define HEAD_FILENAME "head"
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#define ROOT_FILENAME "files"
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#define FILEID_SIZE_MAX 32
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#define FS_KEY_LEN 16
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/* default block size to determine the total filesytem size */
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#define FS_BLOCK_SIZE_LOG2 12
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#define FS_BLOCK_SIZE (1 << FS_BLOCK_SIZE_LOG2)
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typedef enum {
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FS_ERR_OK = 0,
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FS_ERR_GENERIC = -1,
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FS_ERR_SYNTAX = -2,
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FS_ERR_REVISION = -3,
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FS_ERR_FILE_ID = -4,
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FS_ERR_IO = -5,
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FS_ERR_NOENT = -6,
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FS_ERR_COUNTERS = -7,
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FS_ERR_QUOTA = -8,
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FS_ERR_PROTOCOL_VERSION = -9,
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FS_ERR_HEAD = -10,
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} FSCommitErrorCode;
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typedef uint64_t FSFileID;
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static inline BOOL isspace_nolf(int c)
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{
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return (c == ' ' || c == '\t');
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}
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static inline int from_hex(int c)
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{
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if (c >= '0' && c <= '9')
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return c - '0';
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else if (c >= 'A' && c <= 'F')
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return c - 'A' + 10;
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else if (c >= 'a' && c <= 'f')
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return c - 'a' + 10;
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else
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return -1;
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}
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static inline uint64_t block_align(uint64_t val, uint64_t align)
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{
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return (val + align - 1) & ~(align - 1);
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}
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void pstrcpy(char *buf, int buf_size, const char *str);
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char *pstrcat(char *buf, int buf_size, const char *s);
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char *compose_path(const char *path, const char *name);
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char *compose_url(const char *base_url, const char *name);
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void skip_line(const char **pp);
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char *quoted_str(const char *str);
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int parse_fname(char *buf, int buf_size, const char **pp);
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int parse_uint32_base(uint32_t *pval, const char **pp, int base);
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int parse_uint64_base(uint64_t *pval, const char **pp, int base);
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int parse_uint64(uint64_t *pval, const char **pp);
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int parse_uint32(uint32_t *pval, const char **pp);
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int parse_time(uint32_t *psec, uint32_t *pnsec, const char **pp);
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int parse_file_id(FSFileID *pval, const char **pp);
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char *file_id_to_filename(char *buf, FSFileID file_id);
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void encode_hex(char *str, const uint8_t *buf, int len);
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int decode_hex(uint8_t *buf, const char *str, int len);
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BOOL is_url(const char *path);
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const char *skip_header(const char *p);
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int parse_tag(char *buf, int buf_size, const char *str, const char *tag);
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int parse_tag_uint64(uint64_t *pval, const char *str, const char *tag);
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int parse_tag_file_id(FSFileID *pval, const char *str, const char *tag);
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int parse_tag_version(const char *str);
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