Commit 0223e79287 for qemu.org
commit 0223e792871b42c3548104d37ac518103c7d732b
Author: Markus Armbruster <armbru@redhat.com>
Date: Fri Nov 21 13:14:36 2025 +0100
error: Use error_setg_errno() for simplicity and consistency
Use error_setg_errno() instead of passing the value of strerror() or
g_strerror() to error_setg().
The separator between the error message proper and the value of
strerror() changes from " : ", "", " - ", "- " to ": " in places.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20251121121438.1249498-14-armbru@redhat.com>
Acked-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
diff --git a/backends/spdm-socket.c b/backends/spdm-socket.c
index bc5c7afb3c..b625a65d28 100644
--- a/backends/spdm-socket.c
+++ b/backends/spdm-socket.c
@@ -167,7 +167,7 @@ int spdm_socket_connect(uint16_t port, Error **errp)
client_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (client_socket < 0) {
- error_setg(errp, "cannot create socket: %s", strerror(errno));
+ error_setg_errno(errp, errno, "cannot create socket");
return -1;
}
@@ -179,7 +179,7 @@ int spdm_socket_connect(uint16_t port, Error **errp)
if (connect(client_socket, (struct sockaddr *)&server_addr,
sizeof(server_addr)) < 0) {
- error_setg(errp, "cannot connect: %s", strerror(errno));
+ error_setg_errno(errp, errno, "cannot connect");
close(client_socket);
return -1;
}
diff --git a/backends/tpm/tpm_emulator.c b/backends/tpm/tpm_emulator.c
index f10b9074fb..f52cb4d435 100644
--- a/backends/tpm/tpm_emulator.c
+++ b/backends/tpm/tpm_emulator.c
@@ -225,8 +225,7 @@ static int tpm_emulator_set_locality(TPMEmulator *tpm_emu, uint8_t locty_number,
if (tpm_emulator_ctrlcmd(tpm_emu, CMD_SET_LOCALITY, &loc,
sizeof(loc), sizeof(loc.u.resp.tpm_result),
sizeof(loc)) < 0) {
- error_setg(errp, "tpm-emulator: could not set locality : %s",
- strerror(errno));
+ error_setg_errno(errp, errno, "tpm-emulator: could not set locality");
return -1;
}
@@ -315,8 +314,7 @@ static int tpm_emulator_stop_tpm(TPMBackend *tb, Error **errp)
if (tpm_emulator_ctrlcmd(tpm_emu, CMD_STOP, &res, 0,
sizeof(ptm_res), sizeof(res)) < 0) {
- error_setg(errp, "tpm-emulator: Could not stop TPM: %s",
- strerror(errno));
+ error_setg_errno(errp, errno, "tpm-emulator: Could not stop TPM");
return -1;
}
@@ -377,8 +375,8 @@ static int tpm_emulator_set_buffer_size(TPMBackend *tb,
if (tpm_emulator_ctrlcmd(tpm_emu, CMD_SET_BUFFERSIZE, &psbs,
sizeof(psbs.u.req), sizeof(psbs.u.resp.tpm_result),
sizeof(psbs.u.resp)) < 0) {
- error_setg(errp, "tpm-emulator: Could not set buffer size: %s",
- strerror(errno));
+ error_setg_errno(errp, errno,
+ "tpm-emulator: Could not set buffer size");
return -1;
}
@@ -426,8 +424,7 @@ static int tpm_emulator_startup_tpm_resume(TPMBackend *tb, size_t buffersize,
if (tpm_emulator_ctrlcmd(tpm_emu, CMD_INIT, &init, sizeof(init),
sizeof(init.u.resp.tpm_result),
sizeof(init)) < 0) {
- error_setg(errp, "tpm-emulator: could not send INIT: %s",
- strerror(errno));
+ error_setg_errno(errp, errno, "tpm-emulator: could not send INIT");
goto err_exit;
}
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index bc4a016ee3..6fbe604ce8 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -4345,8 +4345,7 @@ int v9fs_device_realize_common(V9fsState *s, const V9fsTransport *t,
* use co-routines here.
*/
if (s->ops->name_to_path(&s->ctx, NULL, "/", &path) < 0) {
- error_setg(errp,
- "error in converting name to path %s", strerror(errno));
+ error_setg_errno(errp, errno, "error in converting name to path");
goto out;
}
if (s->ops->lstat(&s->ctx, &path, &stat)) {
diff --git a/hw/acpi/core.c b/hw/acpi/core.c
index 4e030d8e3b..d9979b0da9 100644
--- a/hw/acpi/core.c
+++ b/hw/acpi/core.c
@@ -293,8 +293,7 @@ void acpi_table_add(const QemuOpts *opts, Error **errp)
memcpy(blob + bloblen, data, r);
bloblen += r;
} else if (errno != EINTR) {
- error_setg(errp, "can't read file %s: %s", *cur,
- strerror(errno));
+ error_setg_errno(errp, errno, "can't read file %s", *cur);
close(fd);
goto out;
}
diff --git a/hw/intc/openpic_kvm.c b/hw/intc/openpic_kvm.c
index 9aafef5d9e..fbf0bdbe07 100644
--- a/hw/intc/openpic_kvm.c
+++ b/hw/intc/openpic_kvm.c
@@ -223,8 +223,7 @@ static void kvm_openpic_realize(DeviceState *dev, Error **errp)
cd.type = kvm_openpic_model;
ret = kvm_vm_ioctl(s, KVM_CREATE_DEVICE, &cd);
if (ret < 0) {
- error_setg(errp, "Can't create device %d: %s",
- cd.type, strerror(errno));
+ error_setg_errno(errp, errno, "Can't create device %d", cd.type);
return;
}
opp->fd = cd.fd;
diff --git a/hw/intc/xics_kvm.c b/hw/intc/xics_kvm.c
index ee72969f5f..61f66d1019 100644
--- a/hw/intc/xics_kvm.c
+++ b/hw/intc/xics_kvm.c
@@ -165,8 +165,9 @@ void icp_kvm_realize(DeviceState *dev, Error **errp)
if (ret < 0) {
Error *local_err = NULL;
- error_setg(&local_err, "Unable to connect CPU%ld to kernel XICS: %s",
- vcpu_id, strerror(errno));
+ error_setg_errno(&local_err, errno,
+ "Unable to connect CPU%ld to kernel XICS",
+ vcpu_id);
if (errno == ENOSPC) {
error_append_hint(&local_err, "Try -smp maxcpus=N with N < %u\n",
MACHINE(qdev_get_machine())->smp.max_cpus);
diff --git a/hw/remote/vfio-user-obj.c b/hw/remote/vfio-user-obj.c
index 4eb036a546..12ecdab6de 100644
--- a/hw/remote/vfio-user-obj.c
+++ b/hw/remote/vfio-user-obj.c
@@ -751,7 +751,7 @@ static void vfu_object_init_ctx(VfuObject *o, Error **errp)
LIBVFIO_USER_FLAG_ATTACH_NB,
o, VFU_DEV_TYPE_PCI);
if (o->vfu_ctx == NULL) {
- error_setg(errp, "vfu: Failed to create context - %s", strerror(errno));
+ error_setg_errno(errp, errno, "vfu: Failed to create context");
return;
}
@@ -776,9 +776,9 @@ static void vfu_object_init_ctx(VfuObject *o, Error **errp)
ret = vfu_pci_init(o->vfu_ctx, pci_type, PCI_HEADER_TYPE_NORMAL, 0);
if (ret < 0) {
- error_setg(errp,
- "vfu: Failed to attach PCI device %s to context - %s",
- o->device, strerror(errno));
+ error_setg_errno(errp, errno,
+ "vfu: Failed to attach PCI device %s to context",
+ o->device);
goto fail;
}
@@ -792,9 +792,9 @@ static void vfu_object_init_ctx(VfuObject *o, Error **errp)
VFU_REGION_FLAG_RW | VFU_REGION_FLAG_ALWAYS_CB,
NULL, 0, -1, 0);
if (ret < 0) {
- error_setg(errp,
- "vfu: Failed to setup config space handlers for %s- %s",
- o->device, strerror(errno));
+ error_setg_errno(errp, errno,
+ "vfu: Failed to setup config space handlers for %s",
+ o->device);
goto fail;
}
@@ -822,8 +822,8 @@ static void vfu_object_init_ctx(VfuObject *o, Error **errp)
ret = vfu_realize_ctx(o->vfu_ctx);
if (ret < 0) {
- error_setg(errp, "vfu: Failed to realize device %s- %s",
- o->device, strerror(errno));
+ error_setg_errno(errp, errno, "vfu: Failed to realize device %s",
+ o->device);
goto fail;
}
diff --git a/hw/sensor/emc141x.c b/hw/sensor/emc141x.c
index 7b2ce383a1..a51fc44395 100644
--- a/hw/sensor/emc141x.c
+++ b/hw/sensor/emc141x.c
@@ -59,7 +59,7 @@ static void emc141x_get_temperature(Object *obj, Visitor *v, const char *name,
unsigned tempid;
if (sscanf(name, "temperature%u", &tempid) != 1) {
- error_setg(errp, "error reading %s: %s", name, g_strerror(errno));
+ error_setg_errno(errp, errno, "error reading %s", name);
return;
}
@@ -86,7 +86,7 @@ static void emc141x_set_temperature(Object *obj, Visitor *v, const char *name,
}
if (sscanf(name, "temperature%u", &tempid) != 1) {
- error_setg(errp, "error reading %s: %s", name, g_strerror(errno));
+ error_setg_errno(errp, errno, "error reading %s", name);
return;
}
diff --git a/hw/sensor/tmp421.c b/hw/sensor/tmp421.c
index 3421c44086..127edd0ba5 100644
--- a/hw/sensor/tmp421.c
+++ b/hw/sensor/tmp421.c
@@ -117,7 +117,7 @@ static void tmp421_get_temperature(Object *obj, Visitor *v, const char *name,
int tempid;
if (sscanf(name, "temperature%d", &tempid) != 1) {
- error_setg(errp, "error reading %s: %s", name, g_strerror(errno));
+ error_setg_errno(errp, errno, "error reading %s", name);
return;
}
@@ -154,7 +154,7 @@ static void tmp421_set_temperature(Object *obj, Visitor *v, const char *name,
}
if (sscanf(name, "temperature%d", &tempid) != 1) {
- error_setg(errp, "error reading %s: %s", name, g_strerror(errno));
+ error_setg_errno(errp, errno, "error reading %s", name);
return;
}
diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c
index be97a5effc..7d7141851b 100644
--- a/hw/smbios/smbios.c
+++ b/hw/smbios/smbios.c
@@ -1281,8 +1281,8 @@ static int save_opt_one(void *opaque,
break;
}
if (ret < 0) {
- error_setg(errp, "Unable to read from %s: %s",
- value, strerror(errno));
+ error_setg_errno(errp, errno, "Unable to read from %s",
+ value);
qemu_close(fd);
return -1;
}
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index f2377d2d50..4532d63653 100644
--- a/hw/virtio/vdpa-dev.c
+++ b/hw/virtio/vdpa-dev.c
@@ -41,8 +41,8 @@ vhost_vdpa_device_get_u32(int fd, unsigned long int cmd, Error **errp)
uint32_t val = (uint32_t)-1;
if (ioctl(fd, cmd, &val) < 0) {
- error_setg(errp, "vhost-vdpa-device: cmd 0x%lx failed: %s",
- cmd, strerror(errno));
+ error_setg_errno(errp, errno, "vhost-vdpa-device: cmd 0x%lx failed",
+ cmd);
}
return val;
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 98a98138be..ac410676ef 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -582,7 +582,7 @@ bool postcopy_ram_supported_by_host(MigrationIncomingState *mis, Error **errp)
ufd = uffd_open(O_CLOEXEC);
if (ufd == -1) {
- error_setg(errp, "Userfaultfd not available: %s", strerror(errno));
+ error_setg_errno(errp, errno, "Userfaultfd not available");
goto out;
}
@@ -620,7 +620,7 @@ bool postcopy_ram_supported_by_host(MigrationIncomingState *mis, Error **errp)
* it was enabled.
*/
if (munlockall()) {
- error_setg(errp, "munlockall() failed: %s", strerror(errno));
+ error_setg_errno(errp, errno, "munlockall() failed");
goto out;
}
@@ -632,7 +632,7 @@ bool postcopy_ram_supported_by_host(MigrationIncomingState *mis, Error **errp)
testarea = mmap(NULL, pagesize, PROT_READ | PROT_WRITE, MAP_PRIVATE |
MAP_ANONYMOUS, -1, 0);
if (testarea == MAP_FAILED) {
- error_setg(errp, "Failed to map test area: %s", strerror(errno));
+ error_setg_errno(errp, errno, "Failed to map test area");
goto out;
}
g_assert(QEMU_PTR_IS_ALIGNED(testarea, pagesize));
@@ -642,14 +642,14 @@ bool postcopy_ram_supported_by_host(MigrationIncomingState *mis, Error **errp)
reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING;
if (ioctl(ufd, UFFDIO_REGISTER, ®_struct)) {
- error_setg(errp, "UFFDIO_REGISTER failed: %s", strerror(errno));
+ error_setg_errno(errp, errno, "UFFDIO_REGISTER failed");
goto out;
}
range_struct.start = (uintptr_t)testarea;
range_struct.len = pagesize;
if (ioctl(ufd, UFFDIO_UNREGISTER, &range_struct)) {
- error_setg(errp, "UFFDIO_UNREGISTER failed: %s", strerror(errno));
+ error_setg_errno(errp, errno, "UFFDIO_UNREGISTER failed");
goto out;
}
diff --git a/net/slirp.c b/net/slirp.c
index 5996fec512..04925f3318 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -1020,8 +1020,9 @@ static int slirp_smb(SlirpState* s, const char *exported_dir,
}
if (access(exported_dir, R_OK | X_OK)) {
- error_setg(errp, "Error accessing shared directory '%s': %s",
- exported_dir, strerror(errno));
+ error_setg_errno(errp, errno,
+ "Error accessing shared directory '%s'",
+ exported_dir);
return -1;
}
diff --git a/qga/commands-posix-ssh.c b/qga/commands-posix-ssh.c
index 246171d323..661972e34e 100644
--- a/qga/commands-posix-ssh.c
+++ b/qga/commands-posix-ssh.c
@@ -61,20 +61,22 @@ mkdir_for_user(const char *path, const struct passwd *p,
mode_t mode, Error **errp)
{
if (g_mkdir(path, mode) == -1) {
- error_setg(errp, "failed to create directory '%s': %s",
- path, g_strerror(errno));
+ error_setg_errno(errp, errno, "failed to create directory '%s'",
+ path);
return false;
}
if (chown(path, p->pw_uid, p->pw_gid) == -1) {
- error_setg(errp, "failed to set ownership of directory '%s': %s",
- path, g_strerror(errno));
+ error_setg_errno(errp, errno,
+ "failed to set ownership of directory '%s'",
+ path);
return false;
}
if (chmod(path, mode) == -1) {
- error_setg(errp, "failed to set permissions of directory '%s': %s",
- path, g_strerror(errno));
+ error_setg_errno(errp, errno,
+ "failed to set permissions of directory '%s'",
+ path);
return false;
}
@@ -95,14 +97,15 @@ write_authkeys(const char *path, const GStrv keys,
}
if (chown(path, p->pw_uid, p->pw_gid) == -1) {
- error_setg(errp, "failed to set ownership of directory '%s': %s",
- path, g_strerror(errno));
+ error_setg_errno(errp, errno,
+ "failed to set ownership of directory '%s'",
+ path);
return false;
}
if (chmod(path, 0600) == -1) {
- error_setg(errp, "failed to set permissions of '%s': %s",
- path, g_strerror(errno));
+ error_setg_errno(errp, errno, "failed to set permissions of '%s'",
+ path);
return false;
}
diff --git a/system/vl.c b/system/vl.c
index b60b883050..aa9a155041 100644
--- a/system/vl.c
+++ b/system/vl.c
@@ -618,7 +618,7 @@ static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
}
#endif
if (dupfd == -1) {
- error_setg(errp, "error duplicating fd: %s", strerror(errno));
+ error_setg_errno(errp, errno, "error duplicating fd");
return -1;
}
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index 3b2f1077da..1521787b3f 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -2699,9 +2699,8 @@ int kvmppc_get_htab_fd(bool write, uint64_t index, Error **errp)
ret = kvm_vm_ioctl(kvm_state, KVM_PPC_GET_HTAB_FD, &s);
if (ret < 0) {
- error_setg(errp, "Unable to open fd for %s HPT %s KVM: %s",
- write ? "writing" : "reading", write ? "to" : "from",
- strerror(errno));
+ error_setg_errno(errp, errno, "Unable to open fd for %s HPT %s KVM",
+ write ? "writing" : "reading", write ? "to" : "from");
return -errno;
}