diff options
Diffstat (limited to 'src/basic/cap-list.c')
-rw-r--r-- | src/basic/cap-list.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/basic/cap-list.c b/src/basic/cap-list.c index d68cc78d05..2e9b2d9a55 100644 --- a/src/basic/cap-list.c +++ b/src/basic/cap-list.c @@ -20,7 +20,10 @@ #include <errno.h> #include <string.h> +#include "alloc-util.h" +#include "capability-util.h" #include "cap-list.h" +#include "extract-word.h" #include "macro.h" #include "missing.h" #include "parse-util.h" @@ -64,3 +67,67 @@ int capability_from_name(const char *name) { int capability_list_length(void) { return (int) ELEMENTSOF(capability_names); } + +int capability_set_to_string_alloc(uint64_t set, char **s) { + _cleanup_free_ char *str = NULL; + unsigned long i; + size_t allocated = 0, n = 0; + + assert(s); + + for (i = 0; i < cap_last_cap(); i++) + if (set & (UINT64_C(1) << i)) { + const char *p; + size_t add; + + p = capability_to_name(i); + if (!p) + return -EINVAL; + + add = strlen(p); + + if (!GREEDY_REALLOC(str, allocated, n + add + 2)) + return -ENOMEM; + + strcpy(mempcpy(str + n, p, add), " "); + n += add + 1; + } + + if (!GREEDY_REALLOC(str, allocated, n + 1)) + return -ENOMEM; + + str[n > 0 ? n - 1 : 0] = '\0'; /* truncate the last space, if it's there */ + + *s = str; + str = NULL; + + return 0; +} + +int capability_set_from_string(const char *s, uint64_t *set) { + uint64_t val = 0; + const char *p; + + assert(set); + + for (p = s;;) { + _cleanup_free_ char *word = NULL; + int r; + + r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); + if (r == -ENOMEM) + return r; + if (r <= 0) + break; + + r = capability_from_name(word); + if (r < 0) + continue; + + val |= ((uint64_t) UINT64_C(1)) << (uint64_t) r; + } + + *set = val; + + return 0; +} |