* creation etc.
*/
#include "cache.h"
+#include "string-list.h"
#include "delta.h"
#include "pack.h"
#include "blob.h"
#include "pack-revindex.h"
#include "sha1-lookup.h"
#include "bulk-checkin.h"
+#include "streaming.h"
#ifndef O_NOATIME
#if defined(__linux__) && (defined(__i386__) || defined(__PPC__))
* SHA1, an extra slash for the first level indirection, and the
* terminating NUL.
*/
-static int link_alt_odb_entry(const char * entry, int len, const char * relative_base, int depth)
+static int link_alt_odb_entry(const char *entry, const char *relative_base, int depth)
{
const char *objdir = get_object_directory();
struct alternate_object_database *ent;
strbuf_addstr(&pathbuf, real_path(relative_base));
strbuf_addch(&pathbuf, '/');
}
- strbuf_add(&pathbuf, entry, len);
+ strbuf_addstr(&pathbuf, entry);
normalize_path_copy(pathbuf.buf, pathbuf.buf);
return -1;
}
}
- if (!memcmp(ent->base, objdir, pfxlen)) {
+ if (!strcmp(ent->base, objdir)) {
free(ent);
return -1;
}
return 0;
}
-static void link_alt_odb_entries(const char *alt, const char *ep, int sep,
+static void link_alt_odb_entries(const char *alt, int len, int sep,
const char *relative_base, int depth)
{
- const char *cp, *last;
+ struct string_list entries = STRING_LIST_INIT_NODUP;
+ char *alt_copy;
+ int i;
if (depth > 5) {
error("%s: ignoring alternate object stores, nesting too deep.",
return;
}
- last = alt;
- while (last < ep) {
- cp = last;
- if (cp < ep && *cp == '#') {
- while (cp < ep && *cp != sep)
- cp++;
- last = cp + 1;
+ alt_copy = xmemdupz(alt, len);
+ string_list_split_in_place(&entries, alt_copy, sep, -1);
+ for (i = 0; i < entries.nr; i++) {
+ const char *entry = entries.items[i].string;
+ if (entry[0] == '\0' || entry[0] == '#')
continue;
+ if (!is_absolute_path(entry) && depth) {
+ error("%s: ignoring relative alternate object store %s",
+ relative_base, entry);
+ } else {
+ link_alt_odb_entry(entry, relative_base, depth);
}
- while (cp < ep && *cp != sep)
- cp++;
- if (last != cp) {
- if (!is_absolute_path(last) && depth) {
- error("%s: ignoring relative alternate object store %s",
- relative_base, last);
- } else {
- link_alt_odb_entry(last, cp - last,
- relative_base, depth);
- }
- }
- while (cp < ep && *cp == sep)
- cp++;
- last = cp;
}
+ string_list_clear(&entries, 0);
+ free(alt_copy);
}
void read_info_alternates(const char * relative_base, int depth)
map = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
- link_alt_odb_entries(map, map + mapsz, '\n', relative_base, depth);
+ link_alt_odb_entries(map, mapsz, '\n', relative_base, depth);
munmap(map, mapsz);
}
if (commit_lock_file(lock))
die("could not close alternates file");
if (alt_odb_tail)
- link_alt_odb_entries(alt, alt + strlen(alt), '\n', NULL, 0);
+ link_alt_odb_entries(alt, strlen(alt), '\n', NULL, 0);
}
void foreach_alt_odb(alt_odb_fn fn, void *cb)
if (!alt) alt = "";
alt_odb_tail = &alt_odb_list;
- link_alt_odb_entries(alt, alt + strlen(alt), PATH_SEP, NULL, 0);
+ link_alt_odb_entries(alt, strlen(alt), PATH_SEP, NULL, 0);
read_info_alternates(get_object_directory(), 0);
}
}
}
+static unsigned int get_max_fd_limit(void)
+{
+#ifdef RLIMIT_NOFILE
+ struct rlimit lim;
+
+ if (getrlimit(RLIMIT_NOFILE, &lim))
+ die_errno("cannot get RLIMIT_NOFILE");
+
+ return lim.rlim_cur;
+#elif defined(_SC_OPEN_MAX)
+ return sysconf(_SC_OPEN_MAX);
+#elif defined(OPEN_MAX)
+ return OPEN_MAX;
+#else
+ return 1; /* see the caller ;-) */
+#endif
+}
+
/*
* Do not call this directly as this leaks p->pack_fd on error return;
* call open_packed_git() instead.
return error("packfile %s index unavailable", p->pack_name);
if (!pack_max_fds) {
- struct rlimit lim;
- unsigned int max_fds;
-
- if (getrlimit(RLIMIT_NOFILE, &lim))
- die_errno("cannot get RLIMIT_NOFILE");
-
- max_fds = lim.rlim_cur;
+ unsigned int max_fds = get_max_fd_limit();
/* Save 3 for stdin/stdout/stderr, 22 for work */
if (25 < max_fds)
return NULL;
}
-int check_sha1_signature(const unsigned char *sha1, void *map, unsigned long size, const char *type)
+/*
+ * With an in-core object data in "map", rehash it to make sure the
+ * object name actually matches "sha1" to detect object corruption.
+ * With "map" == NULL, try reading the object named with "sha1" using
+ * the streaming interface and rehash it to do the same.
+ */
+int check_sha1_signature(const unsigned char *sha1, void *map,
+ unsigned long size, const char *type)
{
unsigned char real_sha1[20];
- hash_sha1_file(map, size, type, real_sha1);
+ enum object_type obj_type;
+ struct git_istream *st;
+ git_SHA_CTX c;
+ char hdr[32];
+ int hdrlen;
+
+ if (map) {
+ hash_sha1_file(map, size, type, real_sha1);
+ return hashcmp(sha1, real_sha1) ? -1 : 0;
+ }
+
+ st = open_istream(sha1, &obj_type, &size, NULL);
+ if (!st)
+ return -1;
+
+ /* Generate the header */
+ hdrlen = sprintf(hdr, "%s %lu", typename(obj_type), size) + 1;
+
+ /* Sha1.. */
+ git_SHA1_Init(&c);
+ git_SHA1_Update(&c, hdr, hdrlen);
+ for (;;) {
+ char buf[1024 * 16];
+ ssize_t readlen = read_istream(st, buf, sizeof(buf));
+
+ if (!readlen)
+ break;
+ git_SHA1_Update(&c, buf, readlen);
+ }
+ git_SHA1_Final(real_sha1, &c);
+ close_istream(st);
return hashcmp(sha1, real_sha1) ? -1 : 0;
}
unlink_or_warn(tmpfile);
if (ret) {
if (ret != EEXIST) {
- return error("unable to write sha1 filename %s: %s\n", filename, strerror(ret));
+ return error("unable to write sha1 filename %s: %s", filename, strerror(ret));
}
/* FIXME!!! Collision check here ? */
}
fd = create_tmpfile(tmp_file, sizeof(tmp_file), filename);
if (fd < 0) {
if (errno == EACCES)
- return error("insufficient permission for adding an object to repository database %s\n", get_object_directory());
+ return error("insufficient permission for adding an object to repository database %s", get_object_directory());
else
- return error("unable to create temporary sha1 filename %s: %s\n", tmp_file, strerror(errno));
+ return error("unable to create temporary file: %s", strerror(errno));
}
/* Set it up */