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libxl: Check for regcomp failure

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Change libxlGetAutoballoonConf() function to return an int
for success/failure, and fail if regcomp fails.
This commit is contained in:
Jim Fehlig 2013-09-04 00:21:42 -06:00
parent 7e1cbd14bb
commit 3fed82daa4
1 changed files with 19 additions and 11 deletions
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30
src/libxl/libxl_conf.c
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@ -1014,21 +1014,28 @@ error:
return -1;
}
static bool
libxlGetAutoballoonConf(libxlDriverConfigPtr cfg)
static int
libxlGetAutoballoonConf(libxlDriverConfigPtr cfg, bool *autoballoon)
{
regex_t regex;
int ret;
int res;
ret = regcomp(&regex,
"(^| )dom0_mem=((|min:|max:)[0-9]+[bBkKmMgG]?,?)+($| )",
REG_NOSUB | REG_EXTENDED);
if (ret)
return true;
if ((res = regcomp(&regex,
"(^| )dom0_mem=((|min:|max:)[0-9]+[bBkKmMgG]?,?)+($| )",
REG_NOSUB | REG_EXTENDED)) != 0) {
char error[100];
regerror(res, &regex, error, sizeof(error));
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to compile regex %s"),
error);
ret = regexec(&regex, cfg->verInfo->commandline, 0, NULL, 0);
return -1;
}
res = regexec(&regex, cfg->verInfo->commandline, 0, NULL, 0);
regfree(&regex);
return ret == REG_NOMATCH;
*autoballoon = res == REG_NOMATCH;
return 0;
}
libxlDriverConfigPtr
@ -1098,7 +1105,8 @@ libxlDriverConfigNew(void)
}
/* setup autoballoon */
cfg->autoballoon = libxlGetAutoballoonConf(cfg);
if (libxlGetAutoballoonConf(cfg, &cfg->autoballoon) < 0)
goto error;
return cfg;