lib.h 5.9 KB

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  1. /*
  2. * functions (possibly) linked in, complete, from libc.
  3. */
  4. #define nelem(x) (sizeof(x)/sizeof((x)[0]))
  5. #define offsetof(s, m) (ulong)(&(((s*)0)->m))
  6. #define assert(x) if(x){}else _assert("x")
  7. /*
  8. * mem routines
  9. */
  10. extern void* memccpy(void*, void*, int, ulong);
  11. extern void* memset(void*, int, ulong);
  12. extern int memcmp(void*, void*, ulong);
  13. extern void* memmove(void*, void*, ulong);
  14. extern void* memchr(void*, int, ulong);
  15. /*
  16. * string routines
  17. */
  18. extern char* strcat(char*, char*);
  19. extern char* strchr(char*, int);
  20. extern char* strrchr(char*, int);
  21. extern int strcmp(char*, char*);
  22. extern char* strcpy(char*, char*);
  23. extern char* strecpy(char*, char*, char*);
  24. extern char* strncat(char*, char*, long);
  25. extern char* strncpy(char*, char*, long);
  26. extern int strncmp(char*, char*, long);
  27. extern long strlen(char*);
  28. extern char* strstr(char*, char*);
  29. extern int atoi(char*);
  30. extern int fullrune(char*, int);
  31. extern int cistrcmp(char*, char*);
  32. extern int cistrncmp(char*, char*, int);
  33. enum
  34. {
  35. UTFmax = 3, /* maximum bytes per rune */
  36. Runesync = 0x80, /* cannot represent part of a UTF sequence */
  37. Runeself = 0x80, /* rune and UTF sequences are the same (<) */
  38. Runeerror = 0x80, /* decoding error in UTF */
  39. };
  40. /*
  41. * rune routines
  42. */
  43. extern int runetochar(char*, Rune*);
  44. extern int chartorune(Rune*, char*);
  45. extern char* utfrune(char*, long);
  46. extern int utflen(char*);
  47. extern int utfnlen(char*, long);
  48. extern int runelen(long);
  49. extern int abs(int);
  50. /*
  51. * print routines
  52. */
  53. typedef struct Fmt Fmt;
  54. typedef int (*Fmts)(Fmt*);
  55. struct Fmt{
  56. uchar runes; /* output buffer is runes or chars? */
  57. void *start; /* of buffer */
  58. void *to; /* current place in the buffer */
  59. void *stop; /* end of the buffer; overwritten if flush fails */
  60. int (*flush)(Fmt *); /* called when to == stop */
  61. void *farg; /* to make flush a closure */
  62. int nfmt; /* num chars formatted so far */
  63. va_list args; /* args passed to dofmt */
  64. int r; /* % format Rune */
  65. int width;
  66. int prec;
  67. ulong flags;
  68. };
  69. extern int print(char*, ...);
  70. extern char* seprint(char*, char*, char*, ...);
  71. extern char* vseprint(char*, char*, char*, va_list);
  72. extern int snprint(char*, int, char*, ...);
  73. extern int vsnprint(char*, int, char*, va_list);
  74. extern int sprint(char*, char*, ...);
  75. extern int fmtinstall(int, int (*)(Fmt*));
  76. extern void quotefmtinstall(void);
  77. extern int fmtprint(Fmt*, char*, ...);
  78. extern int fmtstrcpy(Fmt*, char*);
  79. extern int encodefmt(Fmt*);
  80. #pragma varargck argpos fmtprint 2
  81. #pragma varargck argpos print 1
  82. #pragma varargck argpos seprint 3
  83. #pragma varargck argpos snprint 3
  84. #pragma varargck argpos sprint 2
  85. #pragma varargck type "H" void*
  86. /*
  87. * one-of-a-kind
  88. */
  89. extern char* cleanname(char*);
  90. extern ulong getcallerpc(void*);
  91. extern long strtol(char*, char**, int);
  92. extern ulong strtoul(char*, char**, int);
  93. extern vlong strtoll(char*, char**, int);
  94. extern uvlong strtoull(char*, char**, int);
  95. extern char etext[];
  96. extern char edata[];
  97. extern char end[];
  98. extern int getfields(char*, char**, int, int, char*);
  99. extern int tokenize(char*, char**, int);
  100. extern int dec64(uchar*, int, char*, int);
  101. extern void qsort(void*, long, long, int (*)(void*, void*));
  102. /*
  103. * Syscall data structures
  104. */
  105. #define MORDER 0x0003 /* mask for bits defining order of mounting */
  106. #define MREPL 0x0000 /* mount replaces object */
  107. #define MBEFORE 0x0001 /* mount goes before others in union directory */
  108. #define MAFTER 0x0002 /* mount goes after others in union directory */
  109. #define MCREATE 0x0004 /* permit creation in mounted directory */
  110. #define MCACHE 0x0010 /* cache some data */
  111. #define MMASK 0x0017 /* all bits on */
  112. #define OREAD 0 /* open for read */
  113. #define OWRITE 1 /* write */
  114. #define ORDWR 2 /* read and write */
  115. #define OEXEC 3 /* execute, == read but check execute permission */
  116. #define OTRUNC 16 /* or'ed in (except for exec), truncate file first */
  117. #define OCEXEC 32 /* or'ed in, close on exec */
  118. #define ORCLOSE 64 /* or'ed in, remove on close */
  119. #define OEXCL 0x1000 /* or'ed in, exclusive create */
  120. #define NCONT 0 /* continue after note */
  121. #define NDFLT 1 /* terminate after note */
  122. #define NSAVE 2 /* clear note but hold state */
  123. #define NRSTR 3 /* restore saved state */
  124. typedef struct Qid Qid;
  125. typedef struct Dir Dir;
  126. typedef struct OWaitmsg OWaitmsg;
  127. typedef struct Waitmsg Waitmsg;
  128. #define ERRMAX 128 /* max length of error string */
  129. #define KNAMELEN 28 /* max length of name held in kernel */
  130. /* bits in Qid.type */
  131. #define QTDIR 0x80 /* type bit for directories */
  132. #define QTAPPEND 0x40 /* type bit for append only files */
  133. #define QTEXCL 0x20 /* type bit for exclusive use files */
  134. #define QTMOUNT 0x10 /* type bit for mounted channel */
  135. #define QTAUTH 0x08 /* type bit for authentication file */
  136. #define QTFILE 0x00 /* plain file */
  137. /* bits in Dir.mode */
  138. #define DMDIR 0x80000000 /* mode bit for directories */
  139. #define DMAPPEND 0x40000000 /* mode bit for append only files */
  140. #define DMEXCL 0x20000000 /* mode bit for exclusive use files */
  141. #define DMMOUNT 0x10000000 /* mode bit for mounted channel */
  142. #define DMREAD 0x4 /* mode bit for read permission */
  143. #define DMWRITE 0x2 /* mode bit for write permission */
  144. #define DMEXEC 0x1 /* mode bit for execute permission */
  145. struct Qid
  146. {
  147. uvlong path;
  148. ulong vers;
  149. uchar type;
  150. };
  151. struct Dir {
  152. /* system-modified data */
  153. ushort type; /* server type */
  154. uint dev; /* server subtype */
  155. /* file data */
  156. Qid qid; /* unique id from server */
  157. ulong mode; /* permissions */
  158. ulong atime; /* last read time */
  159. ulong mtime; /* last write time */
  160. vlong length; /* file length: see <u.h> */
  161. char *name; /* last element of path */
  162. char *uid; /* owner name */
  163. char *gid; /* group name */
  164. char *muid; /* last modifier name */
  165. };
  166. struct OWaitmsg
  167. {
  168. char pid[12]; /* of loved one */
  169. char time[3*12]; /* of loved one and descendants */
  170. char msg[64]; /* compatibility BUG */
  171. };
  172. struct Waitmsg
  173. {
  174. int pid; /* of loved one */
  175. ulong time[3]; /* of loved one and descendants */
  176. char msg[ERRMAX]; /* actually variable-size in user mode */
  177. };