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qemu: Add strtosz_suffix_unit function 

This function does the same as the strtosz_suffix function
except that it allows to specify the unit to which the
k/M/B/T suffixes apply. This function will be used later to
parse the tsc-frequency from the command-line.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Joerg Roedel 2011-07-07 16:13:11 +02:00 committed by Marcelo Tosatti
parent 2a1ac12b0b
commit a732e1baa8
2 changed files with 13 additions and 5 deletions
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16
cutils.c
View File

@ -322,7 +322,8 @@ int fcntl_setfl(int fd, int flag)
* value must be terminated by whitespace, ',' or '\0'. Return -1 on
* error.
*/
int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix)
int64_t strtosz_suffix_unit(const char *nptr, char **end,
const char default_suffix, int64_t unit)
{
int64_t retval = -1;
char *endptr;
@ -362,20 +363,20 @@ int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix)
}
break;
case STRTOSZ_DEFSUFFIX_KB:
mul = 1 << 10;
mul = unit;
break;
case 0:
if (mul_required) {
goto fail;
}
case STRTOSZ_DEFSUFFIX_MB:
mul = 1ULL << 20;
mul = unit * unit;
break;
case STRTOSZ_DEFSUFFIX_GB:
mul = 1ULL << 30;
mul = unit * unit * unit;
break;
case STRTOSZ_DEFSUFFIX_TB:
mul = 1ULL << 40;
mul = unit * unit * unit * unit;
break;
default:
goto fail;
@ -405,6 +406,11 @@ fail:
return retval;
}
int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix)
{
return strtosz_suffix_unit(nptr, end, default_suffix, 1024);
}
int64_t strtosz(const char *nptr, char **end)
{
return strtosz_suffix(nptr, end, STRTOSZ_DEFSUFFIX_MB);

2
qemu-common.h
View File

@ -157,6 +157,8 @@ int fcntl_setfl(int fd, int flag);
#define STRTOSZ_DEFSUFFIX_B 'B'
int64_t strtosz(const char *nptr, char **end);
int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
int64_t strtosz_suffix_unit(const char *nptr, char **end,
const char default_suffix, int64_t unit);
/* path.c */
void init_paths(const char *prefix);