[PATCH 11/33] util: vircommand: Remove OOM handling
Peter Krempa
pkrempa at redhat.com
Wed Feb 24 16:16:46 UTC 2021
The OOM error handling is dead code nowadays.
Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
src/util/vircommand.c | 96 +++++++++----------------------------------
1 file changed, 20 insertions(+), 76 deletions(-)
diff --git a/src/util/vircommand.c b/src/util/vircommand.c
index f11caf0d6e..1a4b77ea24 100644
--- a/src/util/vircommand.c
+++ b/src/util/vircommand.c
@@ -90,7 +90,7 @@ struct _virCommandSendBuffer {
};
struct _virCommand {
- int has_error; /* ENOMEM on allocation failure, -1 for anything else. */
+ int has_error; /* 0 on success, -1 on error */
char **args;
size_t nargs;
@@ -198,7 +198,6 @@ virCommandFDIsSet(virCommandPtr cmd,
*
* Returns: 0 on success,
* -1 on usage error,
- * ENOMEM on OOM
*/
static int
virCommandFDSet(virCommandPtr cmd,
@@ -211,8 +210,7 @@ virCommandFDSet(virCommandPtr cmd,
if (virCommandFDIsSet(cmd, fd))
return 0;
- if (VIR_EXPAND_N(cmd->passfd, cmd->npassfd, 1) < 0)
- return ENOMEM;
+ ignore_value(VIR_EXPAND_N(cmd->passfd, cmd->npassfd, 1));
cmd->passfd[cmd->npassfd - 1].fd = fd;
cmd->passfd[cmd->npassfd - 1].flags = flags;
@@ -1344,10 +1342,7 @@ virCommandAddEnv(virCommandPtr cmd,
}
/* Arg plus trailing NULL. */
- if (VIR_RESIZE_N(cmd->env, cmd->maxenv, cmd->nenv, 1 + 1) < 0) {
- cmd->has_error = ENOMEM;
- return;
- }
+ ignore_value(VIR_RESIZE_N(cmd->env, cmd->maxenv, cmd->nenv, 1 + 1));
cmd->env[cmd->nenv++] = g_steal_pointer(&env);
}
@@ -1474,10 +1469,7 @@ virCommandAddEnvPassCommon(virCommandPtr cmd)
if (!cmd || cmd->has_error)
return;
- if (VIR_RESIZE_N(cmd->env, cmd->maxenv, cmd->nenv, 9) < 0) {
- cmd->has_error = ENOMEM;
- return;
- }
+ ignore_value(VIR_RESIZE_N(cmd->env, cmd->maxenv, cmd->nenv, 9));
virCommandAddEnvPair(cmd, "LC_ALL", "C");
@@ -1497,10 +1489,7 @@ virCommandAddEnvXDG(virCommandPtr cmd, const char *baseDir)
if (!cmd || cmd->has_error)
return;
- if (VIR_RESIZE_N(cmd->env, cmd->maxenv, cmd->nenv, 3) < 0) {
- cmd->has_error = ENOMEM;
- return;
- }
+ ignore_value(VIR_RESIZE_N(cmd->env, cmd->maxenv, cmd->nenv, 3));
virCommandAddEnvFormat(cmd, "XDG_DATA_HOME=%s/%s",
baseDir, ".local/share");
@@ -1530,10 +1519,7 @@ virCommandAddArg(virCommandPtr cmd, const char *val)
}
/* Arg plus trailing NULL. */
- if (VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, 1 + 1) < 0) {
- cmd->has_error = ENOMEM;
- return;
- }
+ ignore_value(VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, 1 + 1));
cmd->args[cmd->nargs++] = g_strdup(val);
}
@@ -1559,10 +1545,7 @@ virCommandAddArgBuffer(virCommandPtr cmd, virBufferPtr buf)
str = g_strdup("");
/* Arg plus trailing NULL. */
- if (VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, 1 + 1) < 0) {
- cmd->has_error = ENOMEM;
- return;
- }
+ ignore_value(VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, 1 + 1));
cmd->args[cmd->nargs] = g_steal_pointer(&str);
cmd->nargs++;
@@ -1591,11 +1574,7 @@ virCommandAddArgFormat(virCommandPtr cmd, const char *format, ...)
va_end(list);
/* Arg plus trailing NULL. */
- if (VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, 1 + 1) < 0) {
- VIR_FREE(arg);
- cmd->has_error = ENOMEM;
- return;
- }
+ ignore_value(VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, 1 + 1));
cmd->args[cmd->nargs++] = arg;
}
@@ -1642,10 +1621,7 @@ virCommandAddArgSet(virCommandPtr cmd, const char *const*vals)
narg++;
/* narg plus trailing NULL. */
- if (VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, narg + 1) < 0) {
- cmd->has_error = ENOMEM;
- return;
- }
+ ignore_value(VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, narg + 1));
narg = 0;
while (vals[narg] != NULL) {
@@ -1678,10 +1654,7 @@ virCommandAddArgList(virCommandPtr cmd, ...)
va_end(list);
/* narg plus trailing NULL. */
- if (VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, narg + 1) < 0) {
- cmd->has_error = ENOMEM;
- return;
- }
+ ignore_value(VIR_RESIZE_N(cmd->args, cmd->maxargs, cmd->nargs, narg + 1));
va_start(list, cmd);
while (1) {
@@ -1765,10 +1738,7 @@ virCommandSetSendBuffer(virCommandPtr cmd,
}
i = virCommandGetNumSendBuffers(cmd);
- if (VIR_REALLOC_N(cmd->sendBuffers, i + 1) < 0) {
- cmd->has_error = ENOMEM;
- return -1;
- }
+ ignore_value(VIR_REALLOC_N(cmd->sendBuffers, i + 1));
cmd->sendBuffers[i].fd = fd;
cmd->sendBuffers[i].buffer = buffer;
@@ -2099,11 +2069,7 @@ virCommandToString(virCommandPtr cmd, bool linebreaks)
/* Cannot assume virCommandRun will be called; so report the error
* now. If virCommandRun is called, it will report the same error. */
- if (!cmd ||cmd->has_error == ENOMEM) {
- virReportOOMError();
- return NULL;
- }
- if (cmd->has_error) {
+ if (!cmd || cmd->has_error) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("invalid use of command API"));
return NULL;
@@ -2339,11 +2305,7 @@ virCommandProcessIO(virCommandPtr cmd)
*/
int virCommandExec(virCommandPtr cmd, gid_t *groups, int ngroups)
{
- if (!cmd ||cmd->has_error == ENOMEM) {
- virReportOOMError();
- return -1;
- }
- if (cmd->has_error) {
+ if (!cmd || cmd->has_error) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("invalid use of command API"));
return -1;
@@ -2388,11 +2350,7 @@ virCommandRun(virCommandPtr cmd, int *exitstatus)
char *str;
int tmpfd;
- if (!cmd ||cmd->has_error == ENOMEM) {
- virReportOOMError();
- return -1;
- }
- if (cmd->has_error) {
+ if (!cmd || cmd->has_error) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("invalid use of command API"));
return -1;
@@ -2539,11 +2497,7 @@ virCommandRunAsync(virCommandPtr cmd, pid_t *pid)
bool synchronous = false;
int infd[2] = {-1, -1};
- if (!cmd || cmd->has_error == ENOMEM) {
- virReportOOMError();
- return -1;
- }
- if (cmd->has_error) {
+ if (!cmd || cmd->has_error) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("invalid use of command API"));
return -1;
@@ -2692,11 +2646,7 @@ virCommandWait(virCommandPtr cmd, int *exitstatus)
int ret;
int status = 0;
- if (!cmd ||cmd->has_error == ENOMEM) {
- virReportOOMError();
- return -1;
- }
- if (cmd->has_error) {
+ if (!cmd || cmd->has_error) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("invalid use of command API"));
return -1;
@@ -2835,11 +2785,8 @@ int virCommandHandshakeWait(virCommandPtr cmd)
{
char c;
int rv;
- if (!cmd ||cmd->has_error == ENOMEM) {
- virReportOOMError();
- return -1;
- }
- if (cmd->has_error || !cmd->handshake) {
+
+ if (!cmd || cmd->has_error || !cmd->handshake) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("invalid use of command API"));
return -1;
@@ -2896,11 +2843,8 @@ int virCommandHandshakeWait(virCommandPtr cmd)
int virCommandHandshakeNotify(virCommandPtr cmd)
{
char c = '1';
- if (!cmd ||cmd->has_error == ENOMEM) {
- virReportOOMError();
- return -1;
- }
- if (cmd->has_error || !cmd->handshake) {
+
+ if (!cmd || cmd->has_error || !cmd->handshake) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("invalid use of command API"));
return -1;
--
2.29.2
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