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Code Issues Releases Wiki Activity

Factor out DMI string reading into subfunction

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Corresponding to flashrom svn r915.

Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Michael Karcher 2010-02-26 09:51:16 +00:00
parent 14ba6682e9
commit 0d7fb7c5ed
1 changed files with 47 additions and 44 deletions
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91
dmi.c
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@ -54,55 +54,58 @@ char *dmistrings[DMI_ID_INVALID];
/* strings longer than 4096 in DMI are just insane */ /* strings longer than 4096 in DMI are just insane */
#define DMI_MAX_ANSWER_LEN 4096 #define DMI_MAX_ANSWER_LEN 4096
void dmi_init(void) static char *get_dmi_string(const char *string_name)
{ {
FILE *dmidecode_pipe; FILE *dmidecode_pipe;
int i; char *result;
char *answerbuf = malloc(DMI_MAX_ANSWER_LEN); char answerbuf[DMI_MAX_ANSWER_LEN];
if(!answerbuf) char commandline[DMI_COMMAND_LEN_MAX+40];
{ snprintf(commandline, sizeof(commandline),
fprintf(stderr, "DMI: couldn't alloc answer buffer\n"); "%s -s %s", dmidecode_command, string_name);
return; dmidecode_pipe = popen(commandline, "r");
if (!dmidecode_pipe) {
printf_debug("DMI pipe open error\n");
return NULL;
}
if (!fgets(answerbuf, DMI_MAX_ANSWER_LEN, dmidecode_pipe) &&
ferror(dmidecode_pipe)) {
printf_debug("DMI pipe read error\n");
pclose(dmidecode_pipe);
return NULL;
}
/* Toss all output above DMI_MAX_ANSWER_LEN away to prevent
deadlock on pclose. */
while (!feof(dmidecode_pipe))
getc(dmidecode_pipe);
if (pclose(dmidecode_pipe) != 0) {
printf_debug("DMI pipe close error\n");
return NULL;
} }
for (i = 0; i < DMI_ID_INVALID; i++)
{
char commandline[DMI_COMMAND_LEN_MAX+40];
snprintf(commandline, sizeof(commandline),
"%s -s %s", dmidecode_command, dmidecode_names[i]);
dmidecode_pipe = popen(commandline, "r");
if (!dmidecode_pipe)
{
printf_debug("DMI pipe open error\n");
goto out_free;
}
if (!fgets(answerbuf, DMI_MAX_ANSWER_LEN, dmidecode_pipe) &&
ferror(dmidecode_pipe))
{
printf_debug("DMI pipe read error\n");
pclose(dmidecode_pipe);
goto out_free;
}
/* Toss all output above DMI_MAX_ANSWER_LEN away to prevent
deadlock on pclose. */
while (!feof(dmidecode_pipe))
getc(dmidecode_pipe);
if (pclose(dmidecode_pipe) != 0)
{
printf_debug("DMI pipe close error\n");
goto out_free;
}
/* chomp trailing newline */ /* chomp trailing newline */
if (answerbuf[0] != 0 && if (answerbuf[0] != 0 &&
answerbuf[strlen(answerbuf) - 1] == '\n') answerbuf[strlen(answerbuf) - 1] == '\n')
answerbuf[strlen(answerbuf) - 1] = 0; answerbuf[strlen(answerbuf) - 1] = 0;
printf_debug("DMI string %s: \"%s\"\n", dmidecode_names[i], printf_debug("DMI string %s: \"%s\"\n", string_name, answerbuf);
answerbuf);
dmistrings[i] = strdup(answerbuf); result = strdup(answerbuf);
} if (!result)
puts("WARNING: Out of memory - DMI support fails");
return result;
}
void dmi_init(void)
{
int i;
has_dmi_support = 1; has_dmi_support = 1;
out_free: for (i = 0; i < DMI_ID_INVALID; i++) {
free(answerbuf); dmistrings[i] = get_dmi_string(dmidecode_names[i]);
if (!dmistrings[i]) {
has_dmi_support = 0;
break;
}
}
} }
/** /**