return res;
}
+static bool
+initHashMethod(struct HashDirConfiguration *conf, char const *filename)
+{
+ int fd = open(filename, O_RDONLY);
+ if (fd==-1 && conf->method==0)
+ conf->method = hashFunctionDefault();
+
+ if (fd==-1) {
+ assert(conf->method!=0);
+ if (conf->method==0) return false;
+ if (global_args->dry_run) return true; // do not create the file
+
+ fd = Eopen(filename, O_WRONLY|O_CREAT|O_EXCL|O_NOFOLLOW, 0644);
+ TEMP_FAILURE_RETRY(write(fd, conf->method->name, strlen(conf->method->name)));
+ TEMP_FAILURE_RETRY(write(fd, "\n", 1));
+ }
+ else {
+ off_t s = Elseek(fd, 0, SEEK_END);
+ char buf[s + 1];
+ Elseek(fd, 0, SEEK_SET);
+
+ conf->method=0;
+
+ if (s>0 && read(fd, buf, s+1)==s) {
+ while (s>0 && (buf[s-1]=='\0' || buf[s-1]=='\n'))
+ --s;
+ buf[s] = '\0';
+
+ conf->method = hashFunctionFind(buf);
+ if (conf->method==0) {
+ WRITE_MSG(2, "Can not find hash-function '");
+ WRITE_STR(2, buf);
+ WRITE_MSG(2, "'\n");
+ }
+ }
+ else
+ WRITE_MSG(2, "Can not read configuration file for hash-method\n");
+ }
+
+ if (conf->method!=0 && conf->method->digestsize*8>HASH_MAXBITS) {
+ WRITE_MSG(2, "Wow... what an huge hash-function. I can not handle so much bits; giving up...\n");
+ conf->method=0;
+ }
+
+ Eclose(fd);
+ return conf->method!=0;
+}
+
+static bool
+initHashBlocks(struct HashDirConfiguration *conf, char const *filename)
+{
+ int fd = open(filename, O_RDONLY);
+
+ if (fd==-1) {
+ char str[sizeof("all,start,middle,end,")] = { [0] = '\0' };
+
+ if (global_args->dry_run) return true; // do not create the file
+
+ fd = Eopen(filename, O_WRONLY|O_CREAT|O_EXCL|O_NOFOLLOW, 0644);
+
+ if (conf->blocks== hshALL) strcat(str, "all\n");
+ if (conf->blocks & hshSTART) strcat(str, "start\n");
+ if (conf->blocks & hshMIDDLE) strcat(str, "middle\n");
+ if (conf->blocks & hshEND) strcat(str, "end\n");
+
+ EwriteAll(fd, str, strlen(str));
+ }
+ else {
+ off_t s = Elseek(fd, 0, SEEK_END);
+ char buf[s + 1];
+ Elseek(fd, 0, SEEK_SET);
+
+ conf->blocks = hshINVALID;
+
+ if (s>0 && read(fd, buf, s+1)==s) {
+ char *tok = buf;
+ char *sep = "\n,\t ";
+
+ buf[s] = '\0';
+ conf->blocks = hshALL;
+
+ do {
+ char *ptr = strsep(&tok, sep);
+
+ if (*ptr=='#') { sep = "\n"; continue; }
+ sep = "\n,\t ";
+ if (*ptr=='\0') continue;
+
+ if (strcasecmp(ptr, "all") ==0) conf->blocks = hshALL;
+ else {
+ if (conf->blocks==hshINVALID) conf->blocks = 0;
+
+ else if (strcasecmp(ptr, "start") ==0) conf->blocks |= hshSTART;
+ else if (strcasecmp(ptr, "middle")==0) conf->blocks |= hshMIDDLE;
+ else if (strcasecmp(ptr, "end") ==0) conf->blocks |= hshEND;
+ else {
+ WRITE_MSG(2, "Invalid block descriptor '");
+ WRITE_STR(2, ptr);
+ WRITE_MSG(2, "'\n");
+ conf->blocks = hshINVALID;
+ tok = 0;
+ }
+ }
+ } while (tok!=0);
+ }
+ else
+ WRITE_MSG(2, "Can not read configuration file for hash-blocks\n");
+ }
+
+ Eclose(fd);
+ return conf->blocks!=hshINVALID;
+}
+
+static bool
+initHashBlockSize(struct HashDirConfiguration *conf, char const *filename)
+{
+ if (conf->blocks==hshALL) return true;
+
+ int fd = open(filename, O_RDONLY);
+ if (fd==-1) {
+ char str[sizeof("0x") + sizeof(size_t)*3+2] = {
+ [0] = '0', [1] = 'x'
+ };
+ size_t len = utilvserver_fmt_xuint(str+2, conf->blocksize);
+
+ if (global_args->dry_run) return true; // do not create the file
+
+ fd = Eopen(filename, O_WRONLY|O_CREAT|O_EXCL|O_NOFOLLOW, 0644);
+ EwriteAll(fd, str, len+2);
+ }
+ else {
+ off_t s = Elseek(fd, 0, SEEK_END);
+ char buf[s + 1];
+ Elseek(fd, 0, SEEK_SET);
+
+ conf->blocksize = (size_t)(-1);
+
+ if (s>0 && read(fd, buf, s+1)==s) {
+ char *errptr;
+
+ while (s>0 && (buf[s-1]=='\0' || buf[s-1]=='\n'))
+ --s;
+ buf[s] = '\0';
+
+ conf->blocksize = strtol(buf, &errptr, 0);
+ if (errptr==buf || (*errptr!='\0' && *errptr!='\n')) {
+ WRITE_MSG(2, "Failed to parse blocksize '");
+ WRITE_STR(2, buf);
+ WRITE_MSG(2, "'\n");
+ conf->blocksize = (size_t)(-1);
+ }
+ }
+ else
+ WRITE_MSG(2, "Can not read configuration file for hash-blocksize\n");
+ }
+
+ Eclose(fd);
+ return conf->blocksize!=(size_t)(-1);
+}
+
+static bool
+initHashConf(struct HashDirConfiguration *conf, char const *hashdir)
+{
+ size_t l = strlen(hashdir);
+ char tmp[l + MAX(MAX(sizeof("/method"), sizeof("/blocks")),
+ sizeof("/blocksize"))];
+
+ memcpy(tmp, hashdir, l);
+
+ return ((strcpy(tmp+l, "/method"), initHashMethod (conf, tmp)) &&
+ (strcpy(tmp+l, "/blocks"), initHashBlocks (conf, tmp)) &&
+ (strcpy(tmp+l, "/blocksize"), initHashBlockSize(conf, tmp)));
+}
+
static char *
searchHashdir(char const *lhs, char const *rhs)
{
exit(1);
}
+ if (!initHashConf(&global_info.hash_conf, args->hash_dir)) {
+ WRITE_MSG(2, "failed to initialize hash-configuration\n");
+ exit(1);
+ }
+
global_info.hash_dirs_max_size = initHashList(&global_info.hash_dirs,
args->hash_dir);
MatchList_initManually(&global_info.dst_list, 0, strdup(argv[0]), argv[1]);
exit(1);
}
+ if (!initHashConf(&global_info.hash_conf, hashdir)) {
+ WRITE_MSG(2, "failed to initialize hash-configuration\n");
+ exit(1);
+ }
+
global_info.hash_dirs_max_size = initHashList(&global_info.hash_dirs, hashdir);
free(const_cast(char *)(hashdir));
#define ENSC_WRAPPERS_UNISTD 1
#define ENSC_WRAPPERS_FCNTL 1
#define ENSC_WRAPPERS_DIRENT 1
+#define ENSC_WRAPPERS_IO 1
#include <wrappers.h>
#define HASH_BLOCKSIZE 0x10000000u
#define HASH_MINSIZE 0x10
+#define HASH_MAXBITS 256 // we have to take care about
+ // max filename-length...
#if HASH_MINSIZE<=0
# error HASH_MINSIZE must be not '0'
{ 0,0,0,0 }
};
- // SHA1, grouped by 4 digits + hash-collision counter + 2* '/' + NULL
-typedef char HashPath[160/4 + (160/4/4) + sizeof(unsigned int)*2 + 3];
+ // hash digest grouped by 2 digits + hash-collision counter + 2* '/' + NULL
+typedef char HashPath[HASH_MAXBITS/4 + (HASH_MAXBITS/4/2) +
+ sizeof(unsigned int)*2 + 3];
+
+struct HashDirConfiguration
+{
+ hashFunction const *method;
+ enum { hshALL=0, hshSTART = 1, hshMIDDLE=2,
+ hshEND = 4, hshINVALID = -1 } blocks;
+ size_t blocksize;
+};
struct WalkdownInfo
{
PathInfo state;
struct MatchList dst_list;
+ struct HashDirConfiguration hash_conf;
HashDirCollection hash_dirs;
size_t hash_dirs_max_size;
int wrapper_exit_code = 1;
struct Arguments const *global_args;
-struct WalkdownInfo global_info;
static struct SkipReason skip_reason;
+struct WalkdownInfo global_info = {
+ .hash_conf = { .method = 0,
+ .blocks = hshALL,
+ .blocksize = 0x10000 }
+};
+
#include "vhashify-init.hc"
int Global_getVerbosity() {
for (size_t in=0;
out+1<sizeof(HashPath)-(sizeof(unsigned int)*2 + 2) && in<d_size;
++in) {
- if (in%2 == 0 && in>0) d_path[out++]='/';
- d_path[out++] = HEX_DIGIT[digest[in] >> 4];
- d_path[out++] = HEX_DIGIT[digest[in] & 0x0f];
+ if ((in+254)%(in<=2 ? 1 : 256) == 0 && in>0)
+ d_path[out++]='/';
+ d_path[out++] = HEX_DIGIT[digest[in] >> 4];
+ d_path[out++] = HEX_DIGIT[digest[in] & 0x0f];
}
d_path[out++] = '\0';
char buf[sizeof(int)*2 + 1];
size_t len;
- *ptr++ = '/';
+ *ptr++ = '-';
*ptr = '\0';
ptr[sizeof(int)*2] = '\0';
Vector_init(&global_info.hash_dirs, sizeof(struct HashDirInfo));
- if (hashFunctionContextInit(&global_info.hash_context,
- hashFunctionDefault())==-1)
- return EXIT_FAILURE;
-
-
global_args = &args;
while (1) {
int c = getopt_long(argc, argv, "+nv",
default : assert(false); return EXIT_FAILURE;
};
+ if (hashFunctionContextInit(&global_info.hash_context,
+ global_info.hash_conf.method)==-1) {
+ WRITE_MSG(2, "Failed to initialize hash-context\n");
+ return EXIT_FAILURE;
+ }
+
if (Global_getVerbosity()>=1)
WRITE_MSG(1, "Starting to traverse directories...\n");