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Viewing changes to plugins.d/plymouth.c

  • Committer: teddy at recompile
  • Date: 2020-02-09 03:38:33 UTC
  • Revision ID: teddy@recompile.se-20200209033833-2la1pujrnv2m0so4
Use reallocarray() if available, or check for overflow

* dracut-module/password-agent.c (add_to_queue): Check for overflow.
  (test_add_to_queue_overflow): New test.
* plugin-runner.c (add_to_char_array, main): Use reallocarray().
* plugins.d/plymouth.c (exec_and_wait): - '' -

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plugins.d/plymouth.c
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                                   STDERR_FILENO, execv(), access() */
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#include <stdlib.h>             /* free(), EXIT_FAILURE, realloc(),
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                                   EXIT_SUCCESS, malloc(), _exit(),
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                                   getenv() */
 
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                                   getenv(), reallocarray() */
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#include <dirent.h>             /* scandir(), alphasort() */
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#include <inttypes.h>           /* intmax_t, strtoumax(), SCNuMAX */
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#include <sys/stat.h>           /* struct stat, lstat() */
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    char **tmp;
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    int i = 0;
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    for (; argv[i] != NULL; i++){
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      tmp = realloc(new_argv, sizeof(const char *) * ((size_t)i + 2));
 
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#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 26)
 
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      tmp = reallocarray(new_argv, ((size_t)i + 2),
 
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                         sizeof(const char *));
 
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#else
 
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      if(((size_t)i + 2) > (SIZE_MAX / sizeof(const char *))){
 
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        /* overflow */
 
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        tmp = NULL;
 
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        errno = ENOMEM;
 
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      } else {
 
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        tmp = realloc(new_argv, ((size_t)i + 2) * sizeof(const char *));
 
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      }
 
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#endif
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      if(tmp == NULL){
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        error_plus(0, errno, "realloc");
 
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        error_plus(0, errno, "reallocarray");
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        free(new_argv);
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        _exit(EX_OSERR);
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      }