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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] Remove uses of strcpy and strncpy from common and x86 code.
# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1170082782 0
# Node ID bef7fbe25a9f380d40623795befacd447b026837
# Parent 5bb0840984936749b4e99f53931d72a8579d302c
Remove uses of strcpy and strncpy from common and x86 code.
Retain safe_strcpy(). It can hide the third argument to strlcpy() in
most cases.
Based on patches from Christoph Egger <Christoph.Egger@xxxxxxx>
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
xen/acm/acm_core.c | 12 ++++++++----
xen/arch/x86/cpu/common.c | 6 +++---
xen/arch/x86/cpu/cyrix.c | 7 +++----
xen/arch/x86/cpu/intel.c | 2 +-
xen/arch/x86/dmi_scan.c | 2 +-
xen/arch/x86/domain_build.c | 2 +-
xen/arch/x86/hvm/intercept.c | 6 +++---
xen/arch/x86/setup.c | 4 ++--
xen/common/kexec.c | 2 +-
xen/common/keyhandler.c | 5 ++---
xen/common/libelf/libelf-dominfo.c | 16 ++++++++--------
xen/common/libelf/libelf-private.h | 13 ++++---------
xen/common/perfc.c | 3 +--
xen/common/rangeset.c | 2 +-
xen/drivers/char/console.c | 4 ++--
xen/include/xen/string.h | 5 +----
16 files changed, 42 insertions(+), 49 deletions(-)
diff -r 5bb084098493 -r bef7fbe25a9f xen/acm/acm_core.c
--- a/xen/acm/acm_core.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/acm/acm_core.c Mon Jan 29 14:59:42 2007 +0000
@@ -89,8 +89,11 @@ acm_set_policy_reference(u8 * buf, u32 b
if (!acm_bin_pol.policy_reference_name)
return -ENOMEM;
- strcpy(acm_bin_pol.policy_reference_name, (char *)(buf + sizeof(struct
acm_policy_reference_buffer)));
- printk("%s: Activating policy %s\n", __func__,
acm_bin_pol.policy_reference_name);
+ strlcpy(acm_bin_pol.policy_reference_name,
+ (char *)(buf + sizeof(struct acm_policy_reference_buffer)),
+ ntohl(pr->len));
+ printk("%s: Activating policy %s\n", __func__,
+ acm_bin_pol.policy_reference_name);
return 0;
}
@@ -106,8 +109,9 @@ acm_dump_policy_reference(u8 *buf, u32 b
memset(buf, 0, ret);
pr_buf->len = htonl(strlen(acm_bin_pol.policy_reference_name) + 1); /*
including stringend '\0' */
- strcpy((char *)(buf + sizeof(struct acm_policy_reference_buffer)),
- acm_bin_pol.policy_reference_name);
+ strlcpy((char *)(buf + sizeof(struct acm_policy_reference_buffer)),
+ acm_bin_pol.policy_reference_name,
+ ntohl(pr_buf->len));
return ret;
}
diff -r 5bb084098493 -r bef7fbe25a9f xen/arch/x86/cpu/common.c
--- a/xen/arch/x86/cpu/common.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/arch/x86/cpu/common.c Mon Jan 29 14:59:42 2007 +0000
@@ -30,9 +30,9 @@ static void default_init(struct cpuinfo_
if (c->cpuid_level == -1) {
/* No cpuid. It must be an ancient CPU */
if (c->x86 == 4)
- strcpy(c->x86_model_id, "486");
+ safe_strcpy(c->x86_model_id, "486");
else if (c->x86 == 3)
- strcpy(c->x86_model_id, "386");
+ safe_strcpy(c->x86_model_id, "386");
}
}
@@ -383,7 +383,7 @@ void __devinit identify_cpu(struct cpuin
char *p;
p = table_lookup_model(c);
if ( p )
- strcpy(c->x86_model_id, p);
+ safe_strcpy(c->x86_model_id, p);
else
/* Last resort... */
snprintf(c->x86_model_id, sizeof(c->x86_model_id),
diff -r 5bb084098493 -r bef7fbe25a9f xen/arch/x86/cpu/cyrix.c
--- a/xen/arch/x86/cpu/cyrix.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/arch/x86/cpu/cyrix.c Mon Jan 29 14:59:42 2007 +0000
@@ -181,7 +181,6 @@ static void __init init_cyrix(struct cpu
static void __init init_cyrix(struct cpuinfo_x86 *c)
{
unsigned char dir0, dir0_msn, dir0_lsn, dir1 = 0;
- char *buf = c->x86_model_id;
const char *p = NULL;
/* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
@@ -302,8 +301,8 @@ static void __init init_cyrix(struct cpu
dir0_msn = 7;
break;
}
- strcpy(buf, Cx86_model[dir0_msn & 7]);
- if (p) strcat(buf, p);
+ safe_strcpy(c->x86_model_id, Cx86_model[dir0_msn & 7]);
+ if (p) strcat(c->x86_model_id, p);
return;
}
@@ -339,7 +338,7 @@ static void cyrix_identify(struct cpuinf
if ( c->x86 == 4 && test_cyrix_52div() ) {
unsigned char dir0, dir1;
- strcpy(c->x86_vendor_id, "CyrixInstead");
+ safe_strcpy(c->x86_vendor_id, "CyrixInstead");
c->x86_vendor = X86_VENDOR_CYRIX;
/* Actually enable cpuid on the older cyrix */
diff -r 5bb084098493 -r bef7fbe25a9f xen/arch/x86/cpu/intel.c
--- a/xen/arch/x86/cpu/intel.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/arch/x86/cpu/intel.c Mon Jan 29 14:59:42 2007 +0000
@@ -152,7 +152,7 @@ static void __devinit init_intel(struct
}
if ( p )
- strcpy(c->x86_model_id, p);
+ safe_strcpy(c->x86_model_id, p);
c->x86_max_cores = num_cpu_cores(c);
diff -r 5bb084098493 -r bef7fbe25a9f xen/arch/x86/dmi_scan.c
--- a/xen/arch/x86/dmi_scan.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/arch/x86/dmi_scan.c Mon Jan 29 14:59:42 2007 +0000
@@ -159,7 +159,7 @@ static void __init dmi_save_ident(struct
return;
dmi_ident[slot] = alloc_bootmem(strlen(p)+1);
if(dmi_ident[slot])
- strcpy(dmi_ident[slot], p);
+ safe_strcpy(dmi_ident[slot], p);
else
printk(KERN_ERR "dmi_save_ident: out of memory.\n");
}
diff -r 5bb084098493 -r bef7fbe25a9f xen/arch/x86/domain_build.c
--- a/xen/arch/x86/domain_build.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/arch/x86/domain_build.c Mon Jan 29 14:59:42 2007 +0000
@@ -871,7 +871,7 @@ int construct_dom0(struct domain *d,
memset(si->cmd_line, 0, sizeof(si->cmd_line));
if ( cmdline != NULL )
- strlcpy((char *)si->cmd_line, cmdline, sizeof(si->cmd_line));
+ safe_strcpy(si->cmd_line, cmdline);
if ( fill_console_start_info((void *)(si + 1)) )
{
diff -r 5bb084098493 -r bef7fbe25a9f xen/arch/x86/hvm/intercept.c
--- a/xen/arch/x86/hvm/intercept.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/arch/x86/hvm/intercept.c Mon Jan 29 14:59:42 2007 +0000
@@ -173,7 +173,7 @@ int hvm_register_savevm(struct domain *d
return -1;
}
- strlcpy(se->idstr, idstr, HVM_SE_IDSTR_LEN);
+ safe_strcpy(se->idstr, idstr);
se->instance_id = instance_id;
se->version_id = version_id;
@@ -224,7 +224,7 @@ int hvm_save(struct vcpu *v, hvm_domain_
for(se = v->domain->arch.hvm_domain.first_se; se != NULL; se = se->next) {
/* ID string */
- len = strnlen(se->idstr, HVM_SE_IDSTR_LEN);
+ len = strnlen(se->idstr, sizeof(se->idstr));
hvm_put_8u(h, len);
hvm_put_buffer(h, se->idstr, len);
@@ -262,7 +262,7 @@ static HVMStateEntry *find_se(struct dom
HVMStateEntry *se;
for(se = d->arch.hvm_domain.first_se; se != NULL; se = se->next) {
- if (!strncmp(se->idstr, idstr, HVM_SE_IDSTR_LEN) &&
+ if (!strncmp(se->idstr, idstr, sizeof(se->idstr)) &&
instance_id == se->instance_id){
return se;
}
diff -r 5bb084098493 -r bef7fbe25a9f xen/arch/x86/setup.c
--- a/xen/arch/x86/setup.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/arch/x86/setup.c Mon Jan 29 14:59:42 2007 +0000
@@ -111,7 +111,7 @@ static void parse_acpi_param(char *s)
static void parse_acpi_param(char *s)
{
/* Save the parameter so it can be propagated to domain0. */
- strlcpy(acpi_param, s, sizeof(acpi_param));
+ safe_strcpy(acpi_param, s);
/* Interpret the parameter for use within Xen. */
if ( !strcmp(s, "off") )
@@ -748,7 +748,7 @@ void __init __start_xen(multiboot_info_t
if ( (cmdline = strchr(cmdline, ' ')) != NULL )
{
while ( *cmdline == ' ' ) cmdline++;
- strcpy(dom0_cmdline, cmdline);
+ safe_strcpy(dom0_cmdline, cmdline);
}
cmdline = dom0_cmdline;
diff -r 5bb084098493 -r bef7fbe25a9f xen/common/kexec.c
--- a/xen/common/kexec.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/common/kexec.c Mon Jan 29 14:59:42 2007 +0000
@@ -131,7 +131,7 @@ __initcall(register_crashdump_trigger);
static void setup_note(Elf_Note *n, const char *name, int type, int descsz)
{
- strcpy(ELFNOTE_NAME(n), name);
+ safe_strcpy(ELFNOTE_NAME(n), name);
n->namesz = strlen(name);
n->descsz = descsz;
n->type = type;
diff -r 5bb084098493 -r bef7fbe25a9f xen/common/keyhandler.c
--- a/xen/common/keyhandler.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/common/keyhandler.c Mon Jan 29 14:59:42 2007 +0000
@@ -67,8 +67,7 @@ void register_keyhandler(
ASSERT(key_table[key].u.handler == NULL);
key_table[key].u.handler = handler;
key_table[key].flags = 0;
- strlcpy(key_table[key].desc, desc, STR_MAX);
- key_table[key].desc[STR_MAX-1] = '\0';
+ safe_strcpy(key_table[key].desc, desc);
}
void register_irq_keyhandler(
@@ -77,7 +76,7 @@ void register_irq_keyhandler(
ASSERT(key_table[key].u.irq_handler == NULL);
key_table[key].u.irq_handler = handler;
key_table[key].flags = KEYHANDLER_IRQ_CALLBACK;
- strlcpy(key_table[key].desc, desc, STR_MAX);
+ safe_strcpy(key_table[key].desc, desc);
}
static void show_handlers(unsigned char key)
diff -r 5bb084098493 -r bef7fbe25a9f xen/common/libelf/libelf-dominfo.c
--- a/xen/common/libelf/libelf-dominfo.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/common/libelf/libelf-dominfo.c Mon Jan 29 14:59:42 2007 +0000
@@ -128,16 +128,16 @@ int elf_xen_parse_note(struct elf_binary
switch (type)
{
case XEN_ELFNOTE_LOADER:
- elf_strlcpy(parms->loader, str, sizeof(parms->loader));
+ safe_strcpy(parms->loader, str);
break;
case XEN_ELFNOTE_GUEST_OS:
- elf_strlcpy(parms->guest_os, str, sizeof(parms->guest_os));
+ safe_strcpy(parms->guest_os, str);
break;
case XEN_ELFNOTE_GUEST_VERSION:
- elf_strlcpy(parms->guest_ver, str, sizeof(parms->guest_ver));
+ safe_strcpy(parms->guest_ver, str);
break;
case XEN_ELFNOTE_XEN_VERSION:
- elf_strlcpy(parms->xen_ver, str, sizeof(parms->xen_ver));
+ safe_strcpy(parms->xen_ver, str);
break;
case XEN_ELFNOTE_PAE_MODE:
if (0 == strcmp(str, "yes"))
@@ -224,13 +224,13 @@ int elf_xen_parse_guest_info(struct elf_
/* strings */
if (0 == strcmp(name, "LOADER"))
- elf_strlcpy(parms->loader, value, sizeof(parms->loader));
+ safe_strcpy(parms->loader, value);
if (0 == strcmp(name, "GUEST_OS"))
- elf_strlcpy(parms->guest_os, value, sizeof(parms->guest_os));
+ safe_strcpy(parms->guest_os, value);
if (0 == strcmp(name, "GUEST_VER"))
- elf_strlcpy(parms->guest_ver, value, sizeof(parms->guest_ver));
+ safe_strcpy(parms->guest_ver, value);
if (0 == strcmp(name, "XEN_VER"))
- elf_strlcpy(parms->xen_ver, value, sizeof(parms->xen_ver));
+ safe_strcpy(parms->xen_ver, value);
if (0 == strcmp(name, "PAE"))
{
if (0 == strcmp(value, "yes[extended-cr3]"))
diff -r 5bb084098493 -r bef7fbe25a9f xen/common/libelf/libelf-private.h
--- a/xen/common/libelf/libelf-private.h Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/common/libelf/libelf-private.h Mon Jan 29 14:59:42 2007 +0000
@@ -20,8 +20,6 @@
#define bswap_16(x) swab16(x)
#define bswap_32(x) swab32(x)
#define bswap_64(x) swab64(x)
-
-#define elf_strlcpy(d,s,c) strlcpy(d,s,c)
#else /* !__XEN__ */
@@ -52,13 +50,10 @@
xc_set_error(XC_INVALID_KERNEL, fmt , ## args ); \
} while (0)
-/* SysV unices have no strlcpy/strlcat. */
-static inline size_t elf_strlcpy(char *dest, const char *src, size_t size)
-{
- strncpy(dest, src, size-1);
- dest[size-1] = '\0';
- return strlen(src);
-}
+#define safe_strcpy(d,s) \
+do { strncpy((d),(s),sizeof((d))-1); \
+ (d)[sizeof((d))-1] = '\0'; \
+} while (0)
#endif
diff -r 5bb084098493 -r bef7fbe25a9f xen/common/perfc.c
--- a/xen/common/perfc.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/common/perfc.c Mon Jan 29 14:59:42 2007 +0000
@@ -148,8 +148,7 @@ static int perfc_copy_info(XEN_GUEST_HAN
{
for ( i = 0; i < NR_PERFCTRS; i++ )
{
- strlcpy(perfc_d[i].name, perfc_info[i].name,
- sizeof(perfc_d[i].name));
+ safe_strcpy(perfc_d[i].name, perfc_info[i].name);
switch ( perfc_info[i].type )
{
diff -r 5bb084098493 -r bef7fbe25a9f xen/common/rangeset.c
--- a/xen/common/rangeset.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/common/rangeset.c Mon Jan 29 14:59:42 2007 +0000
@@ -283,7 +283,7 @@ struct rangeset *rangeset_new(
if ( name != NULL )
{
- strlcpy(r->name, name, sizeof(r->name));
+ safe_strcpy(r->name, name);
}
else
{
diff -r 5bb084098493 -r bef7fbe25a9f xen/drivers/char/console.c
--- a/xen/drivers/char/console.c Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/drivers/char/console.c Mon Jan 29 14:59:42 2007 +0000
@@ -481,7 +481,7 @@ void printk(const char *fmt, ...)
void set_printk_prefix(const char *prefix)
{
- strcpy(printk_prefix, prefix);
+ safe_strcpy(printk_prefix, prefix);
}
void init_console(void)
@@ -771,7 +771,7 @@ void debugtrace_printk(const char *fmt,
ASSERT(debugtrace_buf[debugtrace_bytes - 1] == 0);
- sprintf(buf, "%u ", ++count);
+ snprintf(buf, sizeof(buf), "%u ", ++count);
va_start(args, fmt);
(void)vsnprintf(buf + strlen(buf), sizeof(buf), fmt, args);
diff -r 5bb084098493 -r bef7fbe25a9f xen/include/xen/string.h
--- a/xen/include/xen/string.h Mon Jan 29 13:22:21 2007 +0000
+++ b/xen/include/xen/string.h Mon Jan 29 14:59:42 2007 +0000
@@ -82,9 +82,6 @@ extern void * memchr(const void *,int,__
}
#endif
-#define safe_strcpy(d,s) \
-do { strncpy((d),(s),sizeof((d))); \
- (d)[sizeof((d))-1] = '\0'; \
-} while (0)
+#define safe_strcpy(d, s) strlcpy(d, s, sizeof(d))
#endif /* _LINUX_STRING_H_ */
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