diff options
Diffstat (limited to 'qemu/roms/SLOF/lib/libnvram/envvar.c')
| -rw-r--r-- | qemu/roms/SLOF/lib/libnvram/envvar.c | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/qemu/roms/SLOF/lib/libnvram/envvar.c b/qemu/roms/SLOF/lib/libnvram/envvar.c index 87aaf27a0..ee943fce5 100644 --- a/qemu/roms/SLOF/lib/libnvram/envvar.c +++ b/qemu/roms/SLOF/lib/libnvram/envvar.c @@ -17,7 +17,7 @@ #include "nvram.h" /* returns the offset of the first byte after the searched envvar */ -static int get_past_env_pos(partition_t part, char *envvar) +static int get_past_env_pos(partition_t part, char *envvar, int evlen) { int offset, len; static char temp[256]; @@ -32,7 +32,7 @@ static int get_past_env_pos(partition_t part, char *envvar) while((data=nvram_read_byte(offset++)) && len < 256) { temp[len++]=data; } - if (!strncmp(envvar, temp, strlen(envvar))) { + if (!strncmp(envvar, temp, evlen)) { return offset; } } while (len); @@ -43,16 +43,16 @@ static int get_past_env_pos(partition_t part, char *envvar) /** * @param partition name of the envvar partition * @param envvar name of the environment variable + * @param evlen string length of the envvar parameter * @return pointer to temporary string containing the value of envvar */ - -char *get_env(partition_t part, char *envvar) +char *nvram_get_env(partition_t part, char *envvar, int evlen) { static char temp[256+1]; int len, offset; uint8_t data; - DEBUG("get_env %s... ", envvar); + DEBUG("nvram_get_env %p... ", envvar); if(!part.addr) { /* ERROR: No environment variable partition */ DEBUG("invalid partition.\n"); @@ -68,7 +68,7 @@ char *get_env(partition_t part, char *envvar) } temp[len]=0; - if (!strncmp(envvar, temp, strlen(envvar))) { + if (!strncmp(envvar, temp, evlen)) { int pos=0; while (temp[pos]!='=' && pos < len) pos++; // DEBUG("value='%s'\n", temp+pos+1); @@ -100,7 +100,7 @@ static int find_last_envvar(partition_t part) return -1; } -int add_env(partition_t part, char *envvar, char *value) +int nvram_add_env(partition_t part, char *envvar, int evlen, char *value, int vallen) { int freespace, last, len, offset; unsigned int i; @@ -112,7 +112,7 @@ int add_env(partition_t part, char *envvar, char *value) freespace = part.addr+part.len-last; /* how long is the entry we want to write? */ - len = strlen(envvar) + strlen(value) + 2; + len = evlen + vallen + 2; if(freespace<len) { // TODO try to increase partition size @@ -121,18 +121,18 @@ int add_env(partition_t part, char *envvar, char *value) offset=last; - for(i=0; i<strlen(envvar); i++) + for (i = 0; i < evlen; i++) nvram_write_byte(offset++, envvar[i]); nvram_write_byte(offset++, '='); - for(i=0; i<strlen(value); i++) + for (i = 0; i < vallen; i++) nvram_write_byte(offset++, value[i]); return 0; } -int del_env(partition_t part, char *envvar) +int nvram_del_env(partition_t part, char *envvar, int evlen) { int last, current, pos, i; char *buffer; @@ -141,7 +141,7 @@ int del_env(partition_t part, char *envvar) return -1; last=find_last_envvar(part); - current = pos = get_past_env_pos(part, envvar); + current = pos = get_past_env_pos(part, envvar, evlen); // TODO is this really required? /* go back to non-0 value */ @@ -168,25 +168,25 @@ int del_env(partition_t part, char *envvar) return 0; } -int set_env(partition_t part, char *envvar, char *value) +int nvram_set_env(partition_t part, char *envvar, int evlen, char *value, int vallen) { char *oldvalue, *buffer; int last, current, buffersize, i; - DEBUG("set_env %lx[%lx]: %s=%s\n", part.addr, part.len, envvar, value); + DEBUG("nvram_set_env %lx[%lx]: %p=>%p\n", part.addr, part.len, envvar, value); if(!part.addr) return -1; /* Check whether the environment variable exists already */ - oldvalue = get_env(part, envvar); + oldvalue = nvram_get_env(part, envvar, evlen); - if(oldvalue==NULL) - return add_env(part, envvar, value); + if (oldvalue == NULL) + return nvram_add_env(part, envvar, evlen, value, vallen); /* The value did not change. So we succeeded! */ - if(!strncmp(oldvalue, value, strlen(value)+1)) + if (strlen(oldvalue) == vallen && !strncmp(oldvalue, value, vallen)) return 0; /* we need to overwrite environment variables, back them up first */ @@ -195,7 +195,7 @@ int set_env(partition_t part, char *envvar, char *value) /* allocate a buffer */ last=find_last_envvar(part); - current=get_past_env_pos(part, envvar); + current = get_past_env_pos(part, envvar, evlen); buffersize = last - current; buffer=get_nvram_buffer(buffersize); if(!buffer) @@ -214,7 +214,7 @@ int set_env(partition_t part, char *envvar, char *value) current++; /* Write the new value */ - for(i=0; i<(int)strlen(value); i++) { + for(i = 0; i < vallen; i++) { nvram_write_byte(current++, value[i]); } |