/crypto/heimdal/lib/roken/ecalloc.3

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  33. .Dd August 14, 2003
  34. .Dt ECALLOC 3
  35. .Os HEIMDAL
  36. .Sh NAME
  37. .Nm ecalloc ,
  38. .Nm emalloc ,
  39. .Nm eread ,
  40. .Nm erealloc ,
  41. .Nm esetenv ,
  42. .Nm estrdup ,
  43. .Nm ewrite
  44. .Nd exit-on-failure wrapper functions
  45. .Sh LIBRARY
  46. The roken library (libroken, -lroken)
  47. .Sh SYNOPSIS
  48. .Fd #include <roken.h>
  49. .Ft "void *"
  50. .Fn ecalloc "size_t number" "size_t size"
  51. .Ft "void *"
  52. .Fn emalloc "size_t sz"
  53. .Ft ssize_t
  54. .Fn eread "int fd" "void *buf" "size_t nbytes"
  55. .Ft "void *"
  56. .Fn erealloc "void *ptr" "size_t sz"
  57. .Ft void
  58. .Fn esetenv "const char *var" "const char *val" "int rewrite"
  59. .Ft "char *"
  60. .Fn estrdup "const char *str"
  61. .Ft ssize_t
  62. .Fn ewrite "int fd" "const void *buf" "size_t nbytes"
  63. .Sh DESCRIPTION
  64. These functions do the same as the ones without the
  65. .Dq e
  66. prefix, but if there is an error they will print a message with
  67. .Xr errx 3 ,
  68. and exit. For
  69. .Nm eread
  70. and
  71. .Nm ewrite
  72. this is also true for partial data.
  73. .Pp
  74. This is useful in applications when there is no need for a more
  75. advanced failure mode.
  76. .Sh SEE ALSO
  77. .Xr read 2 ,
  78. .Xr write 2 ,
  79. .Xr calloc 3 ,
  80. .Xr errx 3 ,
  81. .Xr malloc 3 ,
  82. .Xr realloc 3 ,
  83. .Xr setenv 3 ,
  84. .Xr strdup 3