[libvirt] [PATCH v2 16/23] libxl: convert over to use GRegex for regular expressions

Reviewed-by: Pavel Hrdina <phrdina(a)redhat.com&gt; Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- src/libxl/libxl_capabilities.c | 42 +++++++++++++++------------------- 1 file changed, 19 insertions(+), 23 deletions(-) diff --git a/src/libxl/libxl_capabilities.c b/src/libxl/libxl_capabilities.c index 73ae0b3fa1..65c68ffb52 100644 --- a/src/libxl/libxl_capabilities.c +++ b/src/libxl/libxl_capabilities.c @@ -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; -- 2.21.0