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meminfo: buflen identify the left of buffer

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It is enought to only checking the buflen's avaiable or not.
(total size means total copied size)

Co-authored-by: Petro Karashchenko <petro.karashchenko@gmail.com>
This commit is contained in:
Gao Feng 2022-11-28 22:41:41 +08:00 committed by Xiang Xiao
parent 127a3585cc
commit 08f5a5a3be
1 changed files with 3 additions and 3 deletions
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6
fs/procfs/fs_procfsmeminfo.c
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@ -302,7 +302,7 @@ static ssize_t meminfo_read(FAR struct file *filep, FAR char *buffer,
for (entry = g_procfs_meminfo; entry != NULL; entry = entry->next) for (entry = g_procfs_meminfo; entry != NULL; entry = entry->next)
{ {
if (totalsize < buflen) if (buflen > 0)
{ {
struct mallinfo minfo; struct mallinfo minfo;
@ -328,7 +328,7 @@ static ssize_t meminfo_read(FAR struct file *filep, FAR char *buffer,
} }
#ifdef CONFIG_MM_PGALLOC #ifdef CONFIG_MM_PGALLOC
if (totalsize < buflen) if (buflen > 0)
{ {
struct pginfo_s pginfo; struct pginfo_s pginfo;
unsigned long total; unsigned long total;
@ -359,7 +359,7 @@ static ssize_t meminfo_read(FAR struct file *filep, FAR char *buffer,
#endif #endif
#if defined(CONFIG_ARCH_HAVE_PROGMEM) && defined(CONFIG_FS_PROCFS_INCLUDE_PROGMEM) #if defined(CONFIG_ARCH_HAVE_PROGMEM) && defined(CONFIG_FS_PROCFS_INCLUDE_PROGMEM)
if (totalsize < buflen) if (buflen > 0)
{ {
struct progmem_info_s progmem; struct progmem_info_s progmem;