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libxl: convert over to use GRegex for regular expressions

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Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2019-09-20 15:01:41 +01:00
parent 16121a88a7
commit 9c999bf804
1 changed files with 19 additions and 23 deletions
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42
src/libxl/libxl_capabilities.c
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@ -21,7 +21,6 @@
#include <config.h>
#include <libxl.h>
#include <regex.h>
#include "internal.h"
#include "virlog.h"
@ -374,10 +373,10 @@ static int
libxlCapsInitGuests(libxl_ctx *ctx, virCapsPtr caps)
{
const libxl_version_info *ver_info;
int err;
regex_t regex;
g_autoptr(GRegex) regex = NULL;
g_autoptr(GError) err = NULL;
g_autoptr(GMatchInfo) info = NULL;
char *str, *token;
regmatch_t subs[4];
char *saveptr = NULL;
size_t i;
@ -398,12 +397,10 @@ libxlCapsInitGuests(libxl_ctx *ctx, virCapsPtr caps)
return -1;
}
err = regcomp(&regex, XEN_CAP_REGEX, REG_EXTENDED);
if (err != 0) {
char error[100];
regerror(err, &regex, error, sizeof(error));
regex = g_regex_new(XEN_CAP_REGEX, G_REGEX_EXTENDED, 0, &err);
if (!regex) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to compile regex %s"), error);
_("Failed to compile regex %s"), err->message);
return -1;
}
@ -436,31 +433,31 @@ libxlCapsInitGuests(libxl_ctx *ctx, virCapsPtr caps)
nr_guest_archs < sizeof(guest_archs) / sizeof(guest_archs[0])
&& (token = strtok_r(str, " ", &saveptr)) != NULL;
str = NULL) {
if (regexec(&regex, token, sizeof(subs) / sizeof(subs[0]),
subs, 0) == 0) {
int hvm = STRPREFIX(&token[subs[1].rm_so], "hvm");
if (g_regex_match(regex, token, 0, &info)) {
g_autofree char *modestr = g_match_info_fetch(info, 1);
g_autofree char *archstr = g_match_info_fetch(info, 2);
g_autofree char *suffixstr = g_match_info_fetch(info, 3);
int hvm = STRPREFIX(modestr, "hvm");
virArch arch;
int pae = 0, nonpae = 0, ia64_be = 0;
if (STRPREFIX(&token[subs[2].rm_so], "x86_32")) {
if (STRPREFIX(archstr, "x86_32")) {
arch = VIR_ARCH_I686;
if (subs[3].rm_so != -1 &&
STRPREFIX(&token[subs[3].rm_so], "p"))
if (suffixstr != NULL && STRPREFIX(suffixstr, "p"))
pae = 1;
else
nonpae = 1;
} else if (STRPREFIX(&token[subs[2].rm_so], "x86_64")) {
} else if (STRPREFIX(archstr, "x86_64")) {
arch = VIR_ARCH_X86_64;
} else if (STRPREFIX(&token[subs[2].rm_so], "ia64")) {
} else if (STRPREFIX(archstr, "ia64")) {
arch = VIR_ARCH_ITANIUM;
if (subs[3].rm_so != -1 &&
STRPREFIX(&token[subs[3].rm_so], "be"))
if (suffixstr != NULL && STRPREFIX(suffixstr, "be"))
ia64_be = 1;
} else if (STRPREFIX(&token[subs[2].rm_so], "powerpc64")) {
} else if (STRPREFIX(archstr, "powerpc64")) {
arch = VIR_ARCH_PPC64;
} else if (STRPREFIX(&token[subs[2].rm_so], "armv7l")) {
} else if (STRPREFIX(archstr, "armv7l")) {
arch = VIR_ARCH_ARMV7L;
} else if (STRPREFIX(&token[subs[2].rm_so], "aarch64")) {
} else if (STRPREFIX(archstr, "aarch64")) {
arch = VIR_ARCH_AARCH64;
} else {
continue;
@ -515,7 +512,6 @@ libxlCapsInitGuests(libxl_ctx *ctx, virCapsPtr caps)
#endif
}
}
regfree(&regex);
for (i = 0; i < nr_guest_archs; ++i) {
virCapsGuestPtr guest;