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Since UTS_RELEASE was used for fw_path and this points to const data, append uts_release dynamically to an intermediate string. Signed-off-by: John Garry --- drivers/base/firmware_loader/main.c | 39 +++++++++++++++++++++++------ 1 file changed, 31 insertions(+), 8 deletions(-) diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c index ea28102d421e..87da7be61a29 100644 --- a/drivers/base/firmware_loader/main.c +++ b/drivers/base/firmware_loader/main.c @@ -38,7 +38,7 @@ #include #include -#include +#include #include "../base.h" #include "firmware.h" @@ -471,9 +471,9 @@ static int fw_decompress_xz(struct device *dev, struct fw_priv *fw_priv, static char fw_path_para[256]; static const char * const fw_path[] = { fw_path_para, - "/lib/firmware/updates/" UTS_RELEASE, + "/lib/firmware/updates/", /* UTS_RELEASE is appended later */ "/lib/firmware/updates", - "/lib/firmware/" UTS_RELEASE, + "/lib/firmware/", /* UTS_RELEASE is appended later */ "/lib/firmware" }; @@ -496,7 +496,7 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv, size_t size; int i, len, maxlen = 0; int rc = -ENOENT; - char *path, *nt = NULL; + char *path, *fw_path_string, *nt = NULL; size_t msize = INT_MAX; void *buffer = NULL; @@ -510,6 +510,12 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv, if (!path) return -ENOMEM; + fw_path_string = __getname(); + if (!fw_path_string) { + __putname(path); + return -ENOMEM; + } + wait_for_initramfs(); for (i = 0; i < ARRAY_SIZE(fw_path); i++) { size_t file_size = 0; @@ -519,16 +525,32 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv, if (!fw_path[i][0]) continue; + len = snprintf(fw_path_string, PATH_MAX, "%s", fw_path[i]); + if (len >= PATH_MAX) { + rc = -ENAMETOOLONG; + break; + } + + /* Special handling to append UTS_RELEASE */ + if (fw_path[i][len - 1] == '/') { + len = snprintf(fw_path_string, PATH_MAX, "%s%s", + fw_path[i], uts_release); + if (len >= PATH_MAX) { + rc = -ENAMETOOLONG; + break; + } + } + /* strip off \n from customized path */ - maxlen = strlen(fw_path[i]); + maxlen = strlen(fw_path_string); if (i == 0) { - nt = strchr(fw_path[i], '\n'); + nt = strchr(fw_path_string, '\n'); if (nt) - maxlen = nt - fw_path[i]; + maxlen = nt - fw_path_string; } len = snprintf(path, PATH_MAX, "%.*s/%s%s", - maxlen, fw_path[i], + maxlen, fw_path_string, fw_priv->fw_name, suffix); if (len >= PATH_MAX) { rc = -ENAMETOOLONG; @@ -585,6 +607,7 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv, break; } __putname(path); + __putname(fw_path_string); return rc; }