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Use virFileAbsPath instead of manually creating the absolute path

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Removes multiple 4kb stack allocations.

Removes TODO comments as suggested by Daniel P. Berrange.
This commit is contained in:
Matthias Bolte 2011-04-03 11:21:22 +02:00
parent 1901d091f1
commit a16de3594f
1 changed files with 40 additions and 78 deletions
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118
src/libvirt.c
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@ -2238,7 +2238,6 @@ error:
int
virDomainSave(virDomainPtr domain, const char *to)
{
char filepath[4096];
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "to=%s", to);
@ -2260,29 +2259,21 @@ virDomainSave(virDomainPtr domain, const char *to)
goto error;
}
/*
* We must absolutize the file path as the save is done out of process
* TODO: check for URI when libxml2 is linked in.
*/
if (to[0] != '/') {
unsigned int len, t;
t = strlen(to);
if (getcwd(filepath, sizeof(filepath) - (t + 3)) == NULL)
return -1;
len = strlen(filepath);
/* that should be covered by getcwd() semantic, but be 100% sure */
if (len > sizeof(filepath) - (t + 3))
return -1;
filepath[len] = '/';
strcpy(&filepath[len + 1], to);
to = &filepath[0];
}
if (conn->driver->domainSave) {
int ret;
ret = conn->driver->domainSave (domain, to);
char *absolute_to;
/* We must absolutize the file path as the save is done out of process */
if (virFileAbsPath(to, &absolute_to) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute output file path"));
goto error;
}
ret = conn->driver->domainSave(domain, absolute_to);
VIR_FREE(absolute_to);
if (ret < 0)
goto error;
return ret;
@ -2298,7 +2289,7 @@ error:
/**
* virDomainRestore:
* @conn: pointer to the hypervisor connection
* @from: path to the
* @from: path to the input file
*
* This method will restore a domain saved to disk by virDomainSave().
*
@ -2307,7 +2298,6 @@ error:
int
virDomainRestore(virConnectPtr conn, const char *from)
{
char filepath[4096];
VIR_DEBUG("conn=%p, from=%s", conn, from);
virResetLastError();
@ -2326,34 +2316,21 @@ virDomainRestore(virConnectPtr conn, const char *from)
goto error;
}
/*
* We must absolutize the file path as the restore is done out of process
* TODO: check for URI when libxml2 is linked in.
*/
if (from[0] != '/') {
unsigned int len, t;
t = strlen(from);
if (getcwd(filepath, sizeof(filepath) - (t + 3)) == NULL) {
virLibConnError(VIR_ERR_SYSTEM_ERROR,
_("cannot get working directory"));
goto error;
}
len = strlen(filepath);
/* that should be covered by getcwd() semantic, but be 100% sure */
if (len > sizeof(filepath) - (t + 3)) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("path too long"));
goto error;
}
filepath[len] = '/';
strcpy(&filepath[len + 1], from);
from = &filepath[0];
}
if (conn->driver->domainRestore) {
int ret;
ret = conn->driver->domainRestore (conn, from);
char *absolute_from;
/* We must absolutize the file path as the restore is done out of process */
if (virFileAbsPath(from, &absolute_from) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute input file path"));
goto error;
}
ret = conn->driver->domainRestore(conn, absolute_from);
VIR_FREE(absolute_from);
if (ret < 0)
goto error;
return ret;
@ -2381,7 +2358,6 @@ error:
int
virDomainCoreDump(virDomainPtr domain, const char *to, int flags)
{
char filepath[4096];
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "to=%s, flags=%d", to, flags);
@ -2403,35 +2379,21 @@ virDomainCoreDump(virDomainPtr domain, const char *to, int flags)
goto error;
}
/*
* We must absolutize the file path as the save is done out of process
* TODO: check for URI when libxml2 is linked in.
*/
if (to[0] != '/') {
unsigned int len, t;
t = strlen(to);
if (getcwd(filepath, sizeof(filepath) - (t + 3)) == NULL) {
virLibDomainError(VIR_ERR_SYSTEM_ERROR,
_("cannot get current directory"));
goto error;
}
len = strlen(filepath);
/* that should be covered by getcwd() semantic, but be 100% sure */
if (len > sizeof(filepath) - (t + 3)) {
virLibDomainError(VIR_ERR_INTERNAL_ERROR,
_("path too long"));
goto error;
}
filepath[len] = '/';
strcpy(&filepath[len + 1], to);
to = &filepath[0];
}
if (conn->driver->domainCoreDump) {
int ret;
ret = conn->driver->domainCoreDump (domain, to, flags);
char *absolute_to;
/* We must absolutize the file path as the save is done out of process */
if (virFileAbsPath(to, &absolute_to) < 0) {
virLibConnError(VIR_ERR_INTERNAL_ERROR,
_("could not build absolute core file path"));
goto error;
}
ret = conn->driver->domainCoreDump(domain, absolute_to, flags);
VIR_FREE(absolute_to);
if (ret < 0)
goto error;
return ret;