From 378c18e5f024ac5a8aef4cb40d7c9aa9633d144c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:30:35 +0200 Subject: Adding upstream version 2.38.1. Signed-off-by: Daniel Baumann --- include/xalloc.h | 139 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 139 insertions(+) create mode 100644 include/xalloc.h (limited to 'include/xalloc.h') diff --git a/include/xalloc.h b/include/xalloc.h new file mode 100644 index 0000000..c4124cb --- /dev/null +++ b/include/xalloc.h @@ -0,0 +1,139 @@ +/* + * Copyright (C) 2010 Davidlohr Bueso + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + * + * General memory allocation wrappers for malloc, realloc, calloc and strdup + */ + +#ifndef UTIL_LINUX_XALLOC_H +#define UTIL_LINUX_XALLOC_H + +#include +#include + +#include "c.h" + +#ifndef XALLOC_EXIT_CODE +# define XALLOC_EXIT_CODE EXIT_FAILURE +#endif + +static inline +__attribute__((__noreturn__)) +void __err_oom(const char *file, unsigned int line) +{ + err(XALLOC_EXIT_CODE, "%s: %u: cannot allocate memory", file, line); +} + +#define err_oom() __err_oom(__FILE__, __LINE__) + +static inline +__ul_alloc_size(1) +__ul_returns_nonnull +void *xmalloc(const size_t size) +{ + void *ret = malloc(size); + + if (!ret && size) + err(XALLOC_EXIT_CODE, "cannot allocate %zu bytes", size); + return ret; +} + +static inline +__ul_alloc_size(2) +__ul_returns_nonnull +void *xrealloc(void *ptr, const size_t size) +{ + void *ret = realloc(ptr, size); + + if (!ret && size) + err(XALLOC_EXIT_CODE, "cannot allocate %zu bytes", size); + return ret; +} + +static inline +__ul_calloc_size(1, 2) +__ul_returns_nonnull +void *xcalloc(const size_t nelems, const size_t size) +{ + void *ret = calloc(nelems, size); + + if (!ret && size && nelems) + err(XALLOC_EXIT_CODE, "cannot allocate %zu bytes", size); + return ret; +} + +static inline +__attribute__((warn_unused_result)) +__ul_returns_nonnull +char *xstrdup(const char *str) +{ + char *ret; + + assert(str); + ret = strdup(str); + if (!ret) + err(XALLOC_EXIT_CODE, "cannot duplicate string"); + return ret; +} + +static inline +__attribute__((warn_unused_result)) +__ul_returns_nonnull +char *xstrndup(const char *str, size_t size) +{ + char *ret; + + assert(str); + ret = strndup(str, size); + if (!ret) + err(XALLOC_EXIT_CODE, "cannot duplicate string"); + return ret; +} + + +static inline +__attribute__((__format__(printf, 2, 3))) +int xasprintf(char **strp, const char *fmt, ...) +{ + int ret; + va_list args; + + va_start(args, fmt); + ret = vasprintf(&(*strp), fmt, args); + va_end(args); + if (ret < 0) + err(XALLOC_EXIT_CODE, "cannot allocate string"); + return ret; +} + +static inline +__attribute__((__format__(printf, 2, 0))) +int xvasprintf(char **strp, const char *fmt, va_list ap) +{ + int ret = vasprintf(&(*strp), fmt, ap); + + if (ret < 0) + err(XALLOC_EXIT_CODE, "cannot allocate string"); + return ret; +} + + +static inline +__attribute__((warn_unused_result)) +char *xgethostname(void) +{ + char *name; + size_t sz = get_hostname_max() + 1; + + name = xmalloc(sizeof(char) * sz); + if (gethostname(name, sz) != 0) { + free(name); + return NULL; + } + name[sz - 1] = '\0'; + return name; +} + +#endif -- cgit v1.2.3