diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/bootconfig.c | 38 | ||||
| -rw-r--r-- | lib/memregion.c | 1 | ||||
| -rw-r--r-- | lib/random32.c | 2 | ||||
| -rw-r--r-- | lib/string.c | 24 | ||||
| -rw-r--r-- | lib/test_rhashtable.c | 2 |
5 files changed, 51 insertions, 16 deletions
diff --git a/lib/bootconfig.c b/lib/bootconfig.c index 2c905a91d4eb..649ed44f199c 100644 --- a/lib/bootconfig.c +++ b/lib/bootconfig.c @@ -31,6 +31,8 @@ static size_t xbc_data_size __initdata; static struct xbc_node *last_parent __initdata; static const char *xbc_err_msg __initdata; static int xbc_err_pos __initdata; +static int open_brace[XBC_DEPTH_MAX] __initdata; +static int brace_index __initdata; static int __init xbc_parse_error(const char *msg, const char *p) { @@ -431,27 +433,27 @@ static char *skip_spaces_until_newline(char *p) return p; } -static int __init __xbc_open_brace(void) +static int __init __xbc_open_brace(char *p) { - /* Mark the last key as open brace */ - last_parent->next = XBC_NODE_MAX; + /* Push the last key as open brace */ + open_brace[brace_index++] = xbc_node_index(last_parent); + if (brace_index >= XBC_DEPTH_MAX) + return xbc_parse_error("Exceed max depth of braces", p); return 0; } static int __init __xbc_close_brace(char *p) { - struct xbc_node *node; - - if (!last_parent || last_parent->next != XBC_NODE_MAX) + brace_index--; + if (!last_parent || brace_index < 0 || + (open_brace[brace_index] != xbc_node_index(last_parent))) return xbc_parse_error("Unexpected closing brace", p); - node = last_parent; - node->next = 0; - do { - node = xbc_node_get_parent(node); - } while (node && node->next != XBC_NODE_MAX); - last_parent = node; + if (brace_index == 0) + last_parent = NULL; + else + last_parent = &xbc_nodes[open_brace[brace_index - 1]]; return 0; } @@ -492,8 +494,8 @@ static int __init __xbc_parse_value(char **__v, char **__n) break; } if (strchr(",;\n#}", c)) { - v = strim(v); *p++ = '\0'; + v = strim(v); break; } } @@ -661,7 +663,7 @@ static int __init xbc_open_brace(char **k, char *n) return ret; *k = n; - return __xbc_open_brace(); + return __xbc_open_brace(n - 1); } static int __init xbc_close_brace(char **k, char *n) @@ -681,6 +683,13 @@ static int __init xbc_verify_tree(void) int i, depth, len, wlen; struct xbc_node *n, *m; + /* Brace closing */ + if (brace_index) { + n = &xbc_nodes[open_brace[brace_index]]; + return xbc_parse_error("Brace is not closed", + xbc_node_get_data(n)); + } + /* Empty tree */ if (xbc_node_num == 0) { xbc_parse_error("Empty config", xbc_data); @@ -745,6 +754,7 @@ void __init xbc_destroy_all(void) xbc_node_num = 0; memblock_free(__pa(xbc_nodes), sizeof(struct xbc_node) * XBC_NODE_MAX); xbc_nodes = NULL; + brace_index = 0; } /** diff --git a/lib/memregion.c b/lib/memregion.c index 77c85b5251da..be5cfa5a3b57 100644 --- a/lib/memregion.c +++ b/lib/memregion.c @@ -2,6 +2,7 @@ /* identifiers for device / performance-differentiated memory regions */ #include <linux/idr.h> #include <linux/types.h> +#include <linux/memregion.h> static DEFINE_IDA(memregion_ids); diff --git a/lib/random32.c b/lib/random32.c index 932345323af0..dfb9981ab798 100644 --- a/lib/random32.c +++ b/lib/random32.c @@ -49,7 +49,7 @@ static inline void prandom_state_selftest(void) } #endif -DEFINE_PER_CPU(struct rnd_state, net_rand_state); +DEFINE_PER_CPU(struct rnd_state, net_rand_state) __latent_entropy; /** * prandom_u32_state - seeded pseudo-random number generator. diff --git a/lib/string.c b/lib/string.c index 6012c385fb31..4288e0158d47 100644 --- a/lib/string.c +++ b/lib/string.c @@ -272,6 +272,30 @@ ssize_t strscpy_pad(char *dest, const char *src, size_t count) } EXPORT_SYMBOL(strscpy_pad); +/** + * stpcpy - copy a string from src to dest returning a pointer to the new end + * of dest, including src's %NUL-terminator. May overrun dest. + * @dest: pointer to end of string being copied into. Must be large enough + * to receive copy. + * @src: pointer to the beginning of string being copied from. Must not overlap + * dest. + * + * stpcpy differs from strcpy in a key way: the return value is a pointer + * to the new %NUL-terminating character in @dest. (For strcpy, the return + * value is a pointer to the start of @dest). This interface is considered + * unsafe as it doesn't perform bounds checking of the inputs. As such it's + * not recommended for usage. Instead, its definition is provided in case + * the compiler lowers other libcalls to stpcpy. + */ +char *stpcpy(char *__restrict__ dest, const char *__restrict__ src); +char *stpcpy(char *__restrict__ dest, const char *__restrict__ src) +{ + while ((*dest++ = *src++) != '\0') + /* nothing */; + return --dest; +} +EXPORT_SYMBOL(stpcpy); + #ifndef __HAVE_ARCH_STRCAT /** * strcat - Append one %NUL-terminated string to another diff --git a/lib/test_rhashtable.c b/lib/test_rhashtable.c index c5a6fef7b45d..76c607ee6db5 100644 --- a/lib/test_rhashtable.c +++ b/lib/test_rhashtable.c @@ -434,7 +434,7 @@ static int __init test_rhltable(unsigned int entries) } else { if (WARN(err != -ENOENT, "removed non-existent element, error %d not %d", err, -ENOENT)) - continue; + continue; } } |