Re: [libvirt] [PATCH RFC 4/7] libxl: implement virDomainBlockStats

diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c index dc83083..fd952a3 100644 --- a/src/libxl/libxl_driver.c +++ b/src/libxl/libxl_driver.c static int +libxlDiskPathMatches(const char *virtpath, const char *devtype, + int *index_r, int max_index, + int *partition_r, int max_partition) +{ + const char *p; + char *ep; + int tl, c; + long pl; + + tl = strlen(devtype); + if (memcmp(virtpath, devtype, tl)) + return 0;

+ + /* We decode the drive letter as if it were in base 52 + * with digits a-zA-Z, more or less */ + *index_r = -1; + p = virtpath + tl; + for (;;) { + c = *p++; + if (c >= 'a' && c <= 'z') { + c -= 'a'; + } else { + --p; + break; + } + (*index_r)++; + (*index_r) *= 26; + (*index_r) += c; + + if (*index_r > max_index) + return 0; + } + + if (!*p) { + *partition_r = 0; + return 1; + } + + if (*p == '0') + return 0; /* leading zeroes not permitted in partition number */ + + if (virStrToLong_l(p, &ep, 10, &pl) < 0) + return 0; + + if (pl > max_partition || *ep) + return 0; + + *partition_r = pl; + return 1; +}