On Sun, Nov 22, 2009 at 12:12:49AM +0100, Andrea Adami wrote:
>
> Signed-off-by: Andrea Adami <[email protected]>
> Signed-off-by: Yuri Bushmelev <[email protected]>
> ---
> kexec/kexec.c | 38 ++++++++++++++++++++++++++++++--------
> 1 files changed, 30 insertions(+), 8 deletions(-)
>
> diff --git a/kexec/kexec.c b/kexec/kexec.c
> index ce105cd..a3ca79c 100644
> --- a/kexec/kexec.c
> +++ b/kexec/kexec.c
> @@ -933,15 +933,32 @@ void usage(void)
>
> static int kexec_loaded(void)
> {
> - int ret;
> + long ret = -1;
> FILE *fp;
> + char *p;
> + char line[3];
>
> fp = fopen("/sys/kernel/kexec_loaded", "r");
> if (fp == NULL)
> return -1;
> - fscanf(fp, "%d", &ret);
> +/* fscanf(fp, "%d", &ret); */
I'm not sure this comment is needed.
If you'd like to keep it, please indent it by one tab
and replace the between '/*' and 'fscanf' with a single space.
/* fscanf(fp, "%d", &ret); */
> + p = fgets(line, sizeof(line), fp);
> fclose(fp);
> - return ret;
> +
> + if ( NULL == p)
> + return -1;
> +
> + ret = strtol(line, &p, 10);
> +
> + if (ret > INT_MAX)
> + /* Too long */
Please remove this comment or move it to immediately
above the if statement.
/* Too long */
if (ret > INT_MAX)
...
> + return -1;
> +
> + if (p == line)
> + /* No digits were found */
Again, please remove this comment or move it to immediately
above the if statement.
> + return -1;
> +
> + return (int)ret;
> }
>
> /*
> @@ -989,18 +1006,23 @@ static void remove_parameter(char *line, const char
> *param_name)
> char *get_command_line(void)
> {
> FILE *fp;
> - size_t len;
> - char *line = NULL;
> + const int sizeof_line = 1024;
Should they type of sizeof_line be const size_t ?
> + char *line = malloc(sizeof_line); /* according to strdup() later */
Could line be char line[1024] ?
>
> fp = fopen("/proc/cmdline", "r");
> if (!fp)
> - die("Could not read /proc/cmdline.");
> - getline(&line, &len, fp);
> + die("Could not open /proc/cmdline.");
> +
> + if ( NULL == fgets(line, sizeof(line), fp) ) {
* The reverse of this logic makes more sense to me:
if (fgets(line, sizeof(line), fp) == NULL) {
* Should sizeof(line) be sizeof_line?
Or alternatively line changed from a pointer to an array.
As it stands sizeof(line) == 4 (on x86_32, glibc)
> + die("Can't read /proc/cmdline.");
> +
> +/* getline(&line, &len, fp); */
Again, I don't think this comment is needed,
but if you want to keep it please indent it by one tab
and replace the between '/*' and 'getline' with a single space.
> fclose(fp);
fclose looks like it needs to be indented by two tabs.
> + }
>
> if (line) {
> /* strip newline */
> - *(line + strlen(line) - 1) = 0;
> + line[strlen(line) - 1] = '\0';
>
> remove_parameter(line, "BOOT_IMAGE");
> if (kexec_flags & KEXEC_ON_CRASH)
> --
> 1.6.4.4
>
>
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> kexec mailing list
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> http://lists.infradead.org/mailman/listinfo/kexec
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