bin/cpdup/misc.c

   1 /*
   2  * MISC.C
   3  *
   4  * $DragonFly: src/bin/cpdup/misc.c,v 1.16 2008/09/15 20:13:16 thomas Exp $
   5  */
   6
   7 #include "cpdup.h"
   8
   9 void
  10 logstd(const char *ctl, ...)
  11 {
  12     va_list va;
  13
  14     va_start(va, ctl);
  15     vprintf(ctl, va);
  16     va_end(va);
  17 }
  18
  19 void
  20 logerr(const char *ctl, ...)
  21 {
  22     va_list va;
  23
  24     va_start(va, ctl);
  25     vfprintf(stderr, ctl, va);
  26     va_end(va);
  27 }
  28
  29 char *
  30 mprintf(const char *ctl, ...)
  31 {
  32     char *ptr;
  33     va_list va;
  34
  35     ptr = NULL;
  36
  37     va_start(va, ctl);
  38     if (vasprintf(&ptr, ctl, va) < 0)
  39         fatal("malloc failed");
  40     va_end(va);
  41     assert(ptr != NULL);
  42     return(ptr);
  43 }
  44
  45 char *
  46 fextract(FILE *fi, int n, int *pc, int skip)
  47 {
  48     int i;
  49     int c;
  50     int imax;
  51     char *s;
  52
  53     i = 0;
  54     c = *pc;
  55     imax = (n < 0) ? 64 : n + 1;
  56
  57     s = malloc(imax);
  58     if (s == NULL) {
  59         fprintf(stderr, "out of memory\n");
  60         exit(EXIT_FAILURE);
  61     }
  62
  63     while (c != EOF) {
  64         if (n == 0 || (n < 0 && (c == ' ' || c == '\n')))
  65             break;
  66
  67         s[i++] = c;
  68         if (i == imax) {
  69             imax += 64;
  70             s = realloc(s, imax);
  71             if (s == NULL) {
  72                 fprintf(stderr, "out of memory\n");
  73                 exit(EXIT_FAILURE);
  74             }
  75         }
  76         if (n > 0)
  77             --n;
  78         c = getc(fi);
  79     }
  80     if (c == skip && skip != EOF)
  81         c = getc(fi);
  82     *pc = c;
  83     s[i] = 0;
  84     return(s);
  85 }
  86
  87 #ifdef DEBUG_MALLOC
  88
  89 #undef malloc
  90 #undef free
  91
  92 struct malloc_info {
  93         struct malloc_info *next;
  94         struct malloc_info *prev;
  95         const char *file;
  96         int magic;
  97         int line;
  98 };
  99
 100 struct malloc_info DummyInfo = { &DummyInfo, &DummyInfo, NULL, 0, 0 };
 101 struct malloc_info *InfoList = &DummyInfo;
 102
 103 void *
 104 debug_malloc(size_t bytes, const char *file, int line)
 105 {
 106         struct malloc_info *info = malloc(sizeof(*info) + bytes);
 107
 108         info->magic = 0x5513A4C2;
 109         info->file = file;
 110         info->line = line;
 111
 112         info->next = InfoList;
 113         info->prev = InfoList->prev;
 114         info->next->prev = info;
 115         info->prev->next = info;
 116         return(info + 1);
 117 }
 118
 119 void
 120 debug_free(void *ptr)
 121 {
 122         struct malloc_info *info = (struct malloc_info *)ptr - 1;
 123         struct malloc_info *scan;
 124         static int report;
 125
 126         for (scan = DummyInfo.next; scan != &DummyInfo; scan = scan->next) {
 127                 if (info == scan) {
 128                         assert(info->magic == 0x5513A4C2);
 129                         info->magic = 0;
 130                         info->next->prev = info->prev;
 131                         info->prev->next = info->next;
 132                         free(info);
 133                         break;
 134                 }
 135         }
 136         if (scan == &DummyInfo)
 137                 free(ptr);
 138
 139         if ((++report & 65535) == 0) {
 140                 printf("--- report\n");
 141                 for (scan = DummyInfo.next; scan != &DummyInfo; scan = scan->next) {
 142                         printf("%-15s %d\n", scan->file, scan->line);
 143                 }
 144         }
 145 }
 146
 147 #endif
 148
 149 void
 150 fatal(const char *ctl, ...)
 151 {
 152     va_list va;
 153
 154     if (ctl == NULL) {
 155         puts("cpdup [<options>] src [dest]");
 156         puts("    -C          request compressed ssh link if remote operation\n"
 157              "    -v[vv]      verbose level (-vv is typical)\n"
 158              "    -d          print directories being traversed\n"
 159              "    -u          use unbuffered output for -v[vv]\n"
 160              "    -I          display performance summary\n"
 161              "    -f          force update even if files look the same\n"
 162              "    -F<ssh_opt> Add <ssh_opt> to options passed to ssh\n"
 163              "    -i0         do NOT confirm when removing something\n"
 164              "    -j0         do not try to recreate CHR or BLK devices\n"
 165              "    -l          force line-buffered stdout/stderr\n"
 166              "    -s0         disable safeties - allow files to overwrite directories\n"
 167              "    -q          quiet operation\n"
 168              "    -o          do not remove any files, just overwrite/add\n"
 169         );
 170         puts(
 171              "    -k          maintain/generate FSMID checkfile on target,\n"
 172              "                and compare source FSMIDs against the checkfiles\n"
 173              "    -K file     -k+specify FSMID checkfile, else .FSMID.CHECK\n"
 174 #ifndef NOMD5
 175              "    -m          maintain/generate MD5 checkfile on source,\n"
 176              "                and compare with (optional) destination,\n"
 177              "                copying if the compare fails\n"
 178              "    -M file     -m+specify MD5 checkfile, else .MD5_CHECKSUMS\n"
 179              "                copy if md5 check fails\n"
 180 #endif
 181              "    -H path     hardlink from path to target instead of copying\n"
 182              "                source to target, if source matches path.\n"
 183              "    -V          verify file contents even if they appear\n"
 184              "                to be the same.\n"
 185              "    -VV         same as -V but ignore mtime entirely\n"
 186              "    -x          use .cpignore as exclusion file\n"
 187              "    -X file     specify exclusion file\n"
 188              " Version 1.16 by Matt Dillon and Dima Ruban\n"
 189         );
 190         exit(0);
 191     } else {
 192         va_start(va, ctl);
 193         vprintf(ctl, va);
 194         va_end(va);
 195         puts("");
 196         exit(1);
 197     }
 198 }