Mercurial > dropbear

comparison buffer.c @ 1459:06d52bcb8094

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Pointer parameter could be declared as pointing to const
author Francois Perrad <francois.perrad@gadz.org>
date Sat, 19 Aug 2017 17:16:13 +0200
parents 6fafb500de88
children 5916af64acd4
comparison
equal deleted inserted replaced
1458:bdd3802c8ac6 1459:06d52bcb8094
65 65
66 m_free(buf); 66 m_free(buf);
67 } 67 }
68 68
69 /* overwrite the contents of the buffer to clear it */ 69 /* overwrite the contents of the buffer to clear it */
70 void buf_burn(buffer* buf) { 70 void buf_burn(const buffer* buf) {
71 71
72 m_burn(buf->data, buf->size); 72 m_burn(buf->data, buf->size);
73 73
74 } 74 }
75 75
89 return buf; 89 return buf;
90 } 90 }
91 91
92 /* Create a copy of buf, allocating required memory etc. */ 92 /* Create a copy of buf, allocating required memory etc. */
93 /* The new buffer is sized the same as the length of the source buffer. */ 93 /* The new buffer is sized the same as the length of the source buffer. */
94 buffer* buf_newcopy(buffer* buf) { 94 buffer* buf_newcopy(const buffer* buf) {
95 95
96 buffer* ret; 96 buffer* ret;
97 97
98 ret = buf_new(buf->len); 98 ret = buf_new(buf->len);
99 ret->len = buf->len; 99 ret->len = buf->len;
182 buf->pos++; 182 buf->pos++;
183 } 183 }
184 184
185 /* returns an in-place pointer to the buffer, checking that 185 /* returns an in-place pointer to the buffer, checking that
186 * the next len bytes from that position can be used */ 186 * the next len bytes from that position can be used */
187 unsigned char* buf_getptr(buffer* buf, unsigned int len) { 187 unsigned char* buf_getptr(const buffer* buf, unsigned int len) {
188 188
189 if (len > BUF_MAX_INCR || buf->pos + len > buf->len) { 189 if (len > BUF_MAX_INCR || buf->pos + len > buf->len) {
190 dropbear_exit("Bad buf_getptr"); 190 dropbear_exit("Bad buf_getptr");
191 } 191 }
192 return &buf->data[buf->pos]; 192 return &buf->data[buf->pos];
193 } 193 }
194 194
195 /* like buf_getptr, but checks against total size, not used length. 195 /* like buf_getptr, but checks against total size, not used length.
196 * This allows writing past the used length, but not past the size */ 196 * This allows writing past the used length, but not past the size */
197 unsigned char* buf_getwriteptr(buffer* buf, unsigned int len) { 197 unsigned char* buf_getwriteptr(const buffer* buf, unsigned int len) {
198 198
199 if (len > BUF_MAX_INCR || buf->pos + len > buf->size) { 199 if (len > BUF_MAX_INCR || buf->pos + len > buf->size) {
200 dropbear_exit("Bad buf_getwriteptr"); 200 dropbear_exit("Bad buf_getwriteptr");
201 } 201 }
202 return &buf->data[buf->pos]; 202 return &buf->data[buf->pos];