nsh: fix a buffer overflow in help
Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
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902a1d7ece
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@ -675,7 +675,7 @@ static inline void help_cmdlist(FAR struct nsh_vtbl_s *vtbl)
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}
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}
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colwidth += 2;
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colwidth += HELP_TABSIZE;
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/* Determine the number of commands to put on one line */
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@ -890,7 +890,7 @@ static inline void help_builtins(FAR struct nsh_vtbl_s *vtbl)
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return;
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}
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column_width += 2;
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column_width += HELP_TABSIZE;
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/* Determine the number of commands to put on one line */
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@ -913,7 +913,7 @@ static inline void help_builtins(FAR struct nsh_vtbl_s *vtbl)
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nsh_write(vtbl, g_builtin_prompt, strlen(g_builtin_prompt));
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for (i = 0; i < num_builtin_rows; i++)
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{
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offset = 4;
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offset = HELP_TABSIZE;
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memset(line, ' ', offset);
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for (j = 0, k = i;
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