diff options
Diffstat (limited to 'config.c')
| -rw-r--r-- | config.c | 22 |
1 files changed, 16 insertions, 6 deletions
@@ -1939,6 +1939,8 @@ int git_config_set_multivar_in_file(const char *config_filename, int ret; struct lock_file *lock = NULL; char *filename_buf = NULL; + char *contents = NULL; + size_t contents_sz; /* parse-key returns negative; flip the sign to feed exit(3) */ ret = 0 - git_config_parse_key(key, &store.key, &store.baselen); @@ -1988,8 +1990,7 @@ int git_config_set_multivar_in_file(const char *config_filename, goto write_err_out; } else { struct stat st; - char *contents; - size_t contents_sz, copy_begin, copy_end; + size_t copy_begin, copy_end; int i, new_line = 0; if (value_regex == NULL) @@ -2052,8 +2053,17 @@ int git_config_set_multivar_in_file(const char *config_filename, fstat(in_fd, &st); contents_sz = xsize_t(st.st_size); - contents = xmmap(NULL, contents_sz, PROT_READ, - MAP_PRIVATE, in_fd, 0); + contents = xmmap_gently(NULL, contents_sz, PROT_READ, + MAP_PRIVATE, in_fd, 0); + if (contents == MAP_FAILED) { + if (errno == ENODEV && S_ISDIR(st.st_mode)) + errno = EISDIR; + error("unable to mmap '%s': %s", + config_filename, strerror(errno)); + ret = CONFIG_INVALID_FILE; + contents = NULL; + goto out_free; + } close(in_fd); if (chmod(lock->filename.buf, st.st_mode & 07777) < 0) { @@ -2108,8 +2118,6 @@ int git_config_set_multivar_in_file(const char *config_filename, contents_sz - copy_begin) < contents_sz - copy_begin) goto write_err_out; - - munmap(contents, contents_sz); } if (commit_lock_file(lock) < 0) { @@ -2135,6 +2143,8 @@ out_free: if (lock) rollback_lock_file(lock); free(filename_buf); + if (contents) + munmap(contents, contents_sz); return ret; write_err_out: |