diff options
Diffstat (limited to 'src/shared/efivars.c')
| -rw-r--r-- | src/shared/efivars.c | 36 |
1 files changed, 15 insertions, 21 deletions
diff --git a/src/shared/efivars.c b/src/shared/efivars.c index 6908f23e38..8b2b6af4bc 100644 --- a/src/shared/efivars.c +++ b/src/shared/efivars.c @@ -105,7 +105,7 @@ int efi_get_variable( uint32_t a; ssize_t n; struct stat st; - void *r; + _cleanup_free_ void *buf; assert(name); assert(value); @@ -133,25 +133,22 @@ int efi_get_variable( if (n != sizeof(a)) return -EIO; - r = malloc(st.st_size - 4 + 2); - if (!r) + buf = malloc(st.st_size - 4 + 2); + if (!buf) return -ENOMEM; - n = read(fd, r, (size_t) st.st_size - 4); - if (n < 0) { - free(r); + n = read(fd, buf, (size_t) st.st_size - 4); + if (n < 0) return -errno; - } - if (n != (ssize_t) st.st_size - 4) { - free(r); + if (n != (ssize_t) st.st_size - 4) return -EIO; - } /* Always NUL terminate (2 bytes, to protect UTF-16) */ - ((char*) r)[st.st_size - 4] = 0; - ((char*) r)[st.st_size - 4 + 1] = 0; + ((char*) buf)[st.st_size - 4] = 0; + ((char*) buf)[st.st_size - 4 + 1] = 0; - *value = r; + *value = buf; + buf = NULL; *size = (size_t) st.st_size - 4; if (attribute) @@ -458,7 +455,7 @@ int efi_remove_boot_option(uint16_t id) { } int efi_get_boot_order(uint16_t **order) { - void *buf; + _cleanup_free_ void *buf = NULL; size_t l; int r; @@ -466,18 +463,15 @@ int efi_get_boot_order(uint16_t **order) { if (r < 0) return r; - if (l <= 0) { - free(buf); + if (l <= 0) return -ENOENT; - } - if ((l % sizeof(uint16_t) > 0) || - (l / sizeof(uint16_t) > INT_MAX)) { - free(buf); + if (l % sizeof(uint16_t) > 0 || + l / sizeof(uint16_t) > INT_MAX) return -EINVAL; - } *order = buf; + buf = NULL; return (int) (l / sizeof(uint16_t)); } |