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virDiskNameToIndex: ignore trailing digits

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* src/util/util.c (virDiskNameToIndex): Accept sda1, and map it to "sda".
I.e., accept and ignore any string of trailing digits.
This commit is contained in:
Jim Meyering 2010-03-19 18:26:09 +01:00
parent b9a3287e80
commit 67ef701779
1 changed files with 9 additions and 3 deletions
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12
src/util/util.c
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@ -2260,8 +2260,9 @@ const char *virEnumToString(const char *const*types,
return types[type];
}
/* Translates a device name of the form (regex) "[fhv]d[a-z]+" into
* the corresponding index (e.g. sda => 0, hdz => 25, vdaa => 26)
/* Translates a device name of the form (regex) /^[fhv]d[a-z]+[0-9]*$/
* into the corresponding index (e.g. sda => 0, hdz => 25, vdaa => 26)
* Note that any trailing string of digits is simply ignored.
* @param name The name of the device
* @return name's index, or -1 on failure
*/
@ -2285,12 +2286,17 @@ int virDiskNameToIndex(const char *name) {
idx = (idx + (i < 1 ? 0 : 1)) * 26;
if (!c_islower(*ptr))
return -1;
break;
idx += *ptr - 'a';
ptr++;
}
/* Count the trailing digits. */
size_t n_digits = strspn(ptr, "0123456789");
if (ptr[n_digits] != '\0')
return -1;
return idx;
}